
I’ve maintained a reef aquarium for about 2 years. I started off knowing little to nothing and through a great deal of trail and error (more error than trial I think). Due to a number of helpful people, I’ve learned a great deal of the past 2 years. Each time I learned something new, I tried to make note of it so I could share with it others to hopefully make their saltwater journey a little easier as well.
I recently joined Twitter and started looking around for people on there that share my passion and interest for the saltwater hobby. One person I ran across is Techy2011. She recently started a saltwater aquarium and was asking me if I had any tips for beginners. I told her I would write up an article sharing some the tips I’ve collected.
Tank Size
I’ve written on tank size before, but I generally recommend at least a 30 gallon for the beginner and preferably a 75 gallon. The larger the tank the less likely you’ll have issues. A 75 gallon is a good compromise as they are fairly basic to maintain and not too large that they require a great deal of maintenance or space. They are also very common, allowing you to find a very nice used one on Craigslist for around $100.00 or less.
With that being said, saltwater technology has come a long way in recent years and many smaller tanks (often called Nano tanks) are also available. These can also be great options if you want to get started, but are limited in the amount of space you have. I do highly recommend going larger though if you can.
Basic Equipment
Basic equipment that is required:
- A tank - I’d suggest glass for the beginner as it’s tougher and less expensive.
- A stand - You’ll need a stand or strong base to place the tank on. There are many commercial options available, but if you are reasonably talented with wood you can make your own. The important thing to remember is that water weighs 8 lbs per gallon. For a 75gallon tank you’re looking at 600lbs of water alone not counting the weight of the sand bed, the tank itself and live rock. I’m pretty sure my 75gallon tank weighs well over 1000lbs.
- Sand - While some people prefer a glass bottom tank, I prefer the natural look of a deep sand bed, not to mention it has significant benefits to the health of your system. Fine argonite sand is the best option. Don’t make the same mistake I did and use the larger argonite “gravel”, it just causes problems.
- Protein Skimmer - I’ve ran mechanical filtration only, then both a skimmer and mechanical and now just run a skimmer. In my experience, mechanical filtration (i.e. canister filters) are just nitrite producers and don’t offer a great deal of value in a reef tank. I run an AquaC Remora Pro and have found it to be an excellent skimmer of you aren’t running a sump (see below)
- Heaters - Keeping your water at a consistent temperature will go a long way to keeping your fish healthy and happy. I started off running one heater, but later switched to two. I did this as I found two heaters kept the temperature more consistent across the tank AND if one broke, the other served as a back-up. I recommend 5 watts per gallon and when going with two heaters, buy each one large enough to heat the whole tank in case one breaks. I prefer Jager heaters.
- Thermometer - A basic mercury or digital thermometer is perfectly fine for monitoring your temperature. They are both inexpensive and reliable. I prefer the digital as it keeps you from having one stuck on the side of the glass for floating around scaring your fish.
- Refractometer - I started off with a plastic hydrometer to measure my salt levels (specific gravity). After reading and talking to a number of experts, I quickly realized that these cheap little devices are very inaccurate. Maintaining the proper specific gravity in your tank (1.024 to 1.025) is a critical success factor. Refractometers are available for around $40 - $50 dollars and are well worth the money. I was shocked at how far off my cheap plastic hydrometer was.
- Lighting - I’ll touch on lighting below.
- Basic Test Kits - I’ll touch on test kits below as well.
- Powerheads - Water flow in your saltwater tank, especially in a reef tank is critical to the health of your corals. I currently use two Hydor Koralia 3 pumps. One on each side of the tank. I place the pumps so that that move water in a horizontal direction and high enough to cause small waves across the top of the water. The Vortech series of pumps are the best and on my wish list, but are a little out of my price range right now.
- Ground Probe - If you aren’t running a sump like me and have your heaters and power heads in your tank you are bound to get some stray voltage in your tank sooner or later. It happened to me about a year ago. I lost almost every snail I had along with two peppermint shrimp. Thanks to some friends, I bought a ground probe to keep this from happening again. This is a cheap device that may save you a great deal of money plus in the event of a large voltage leak it may save your life as well. Remember, saltwater is a very good conductor of electricity.
I mentioned a sump above. A sump is a smaller thank that lives outside of your regular tank. Most people install them below the tank hidden in the stand. A sump receives water from your tank and then pumps it back in. It provides a way of heating and filtering the water without having the equipment in your tank. It also provides flow thus removing the need from the power heads.
Sumps require that the tank either be drilled (so water can flow in or out of it) or require an overflow box. They also require purchasing a water pump to pump the water back up to your tank. The flow of this pump must match the flow of water coming out of the tank. They are a bit tricky, but can be well worth it. I currently don’t run a sump, but when I move to a larger tank in the next few years, I plan to have one in my basement below my saltwater tank.
Salt and Saltwater
Obviously it would be hard to have a saltwater aquarium without salt or saltwater. That’s pretty obvious right? Saltwater can either be purchased or made yourself. Purchasing saltwater for a large aquarium can become costly really quick. As a result, most hobbiests make their own.
There are many many different salt mixtures and each hobbiest has their own personal preference. I have had very successful results with Reef Crystals. Not only does Reef Crystals add salt, but also lots of required supplements along with adjusting the PH of your water. While I prefer Reef Crystals, most all salt mixes work just fine. Most just buy whichever brand is on sale.
What is far more critical is the water you use. The HUGE mistake I made when I first started out was using tap water. DO NOT under any circumstance use tap water. Water quality in a saltwater aquarium is critical to the success and health or your fish, live rock, and corals. Using anything other than RO/DI filtered water will put your tank at risk and most likely cause serious algae problems. Take it from me, been there, done that.
You can read about how I make and change my tank water in my article: Simple saltwater aquarium water changes.
Also remember, the water in your tank will evaporate but the salt won’t. The end result of this is that as the water evaporates your specific gravity will go up. Maintaining a consistent specific gravity is very important to the well being of your fish. As a result, you need to top your tank off with fresh (no salt) RO/DI water daily. Better yet, invest in an auto top off system to make the chore automatic.
I have the auto system on my list, but for now keep a 5 gallon bucket (with a cover on it) full of RO/DI water next to my tank. I check it in the morning and evening and top it off as necessary.
Cycling without fish
Cycling (also known as the nitrogen cycle) is a process that all new saltwater aquariums have to go through. Cycling is a biological process that stabilizes your aquarium and plays a critical role in keeping your reef system functioning properly.
The cycling process of an aquarium is a process in nature resulting in the birth of various types of nitrifying bacteria. Each new bacteria born consumes the previous one, and in turn gives birth to the next bacteria. The whole process starts with ammonia. About 10 days after the presence of Ammonia occurs, nitrifying bacteria that convert Ammonia to nitrite begin to appear and grow. Finally, the nitrate give birth to a third bacteria: nitrobactors. They grow on the surface of most everything in the tank and feed on oxygen and ammonia. Their waste product is Nitrates. You’ll know you cycling process is complete when you begin to
In general the nitrogen cycling process usually takes about 30 days, but there is no exact time frame for this process to complete its task, as each aquarium is different. Factors such as how many fish, other livestock, and organic matter is present in the tank can vary the completion time, one way or the other. Testing your aquarium water during cycling is very important, as this will tell you what phase the aquarium is in at any given time throughout the process.
Most people cycle their tank with fish. While this works, it’s really hard (and some believe) cruel to the fish. Ammonia is very toxic and literally burns the fish as the ammonia levels rise. Alternatively, I prefer to use uncooked shrimp. Visit the local grocery store and buy about 2-3 cocktail sized shrimp for each 50-gallons of water. Throw the shrimp into the tank (shell and all). Good water movement is critical at this point, so make sure you have those power heads we discussed earlier working away. Leave your protein skimmer off for now as well. Turn the protein skimmer on about 10-15 days after you’ve placed the shrimp in the tank.
Warning, your tank will smell. You’ll also notice brown diatom algae outbreaks and red-slime algae outbreaks as well. When I first cycled, the whole bottom of my tank was covered with brown diatom algae. This is all natural and part of the cycling process, so don’t panic. Red-slime algae can generally be removed by putting some strong flow over the area.
Remember, you tank must get worse to get better. Patience is the key. A typical cycle process takes 30-45 days. Don’t give into that urge to put fish or corals in until the cycle process is complete, they’ll most likely die. With saltwater aquariums, patience is key to success.
Don’t use glass covers
When I purchased by tank it came with glass covers. If yours has them or your local retailer is trying to sell them to you, just say no. Glass covers inhibit the gas/oxygen exchange that occurs at the top of the water. It also increases the temperature of your tank water, especially if you have high output lighting like Metal Halides. Leave the top of the thank open. If you have fish that jump, buy plastic crating material available at your local hardware store and use it instead.
Test, test and test some more
Having proper water conditions is critical to the success of a saltwater aquarium. Testing your water often in the early months of your aquarium is very important. The following tests are recommend for reef tanks:
- PH - Target is 8.2 - I actually use a PH meter now instead of a liquid test, but either is fine.
- dKH - Measures the carbonate hardness of the water. Target is 12.
- Ca - Calcium. Target is 450-500
- Mg - Magnesium. Target is 1500
- NO3 - Nitrate. Target is zero, but less than 10 is fine. Zero is very very hard to get.
- PO - Phosphate. Target is zero. Phosphate is the primary food for algae, something you really want to avoid.
I use either Elos or Salifert test kits. Don’t skimp on cost here, as good quality test kits are worth the money spent. Avoid test strips as well, they just don’t work. I would test your tank weekly for the first few months. As your tank matures, you won’t need to test nearly as often. I generally only test once a month or so now and try my best to post my tests here on my blog.
Lighting
Lighting is way too big of a topic for me to fully cover here, but the type of lighting you will require is directly related to the type of tank and livestock you are going to house. For a simple fish only tank, common florescent lighting will be sufficient. For a reef tank though, much more sophisticated lighting is required. Marine Depot has a great write up on lighting.
Lighting is another area where you really don’t want to skimp on cost. I purchased a fixture from Aquatraders.com and while I’ve been pretty happy with mine thus far, my next unit will be one of far higher quality.
Ask questions
My last and final tip is to ask questions. Feel free to contact me or add a comment with any questions you may have. I’d also encourage you to participate in some of the online reefing forums. My favorite is 3Reef.com. There are tons of folks over there that are experts and can answer pretty much any question you might have.
How about you? What tips do you have for beginners in the hobby? Add a comment!
Photo by: Lisa Brewster