Cloudy aquarium water can be caused by a number of things, including micro bubbles, an algae bloom, a sand storm due to high flow in the display, calcium precipitation, coral spawning or a bacterial bloom. I recently had to tackle this issue with my new 187 gallon reef tank so I went through this list systematically to diagnose the problem.
Aquarium Filtering and water flow with my boy Bryan in his NEW 180
Some other gravel vacuums have a valve in them that will allowwater to flow one way, but not the other. The manufacturers of theserecommend that you shake the gravel vacuum rapidly up and down in theaquarium to push water past that valve and into the tube. In thismanner you can get the siphon started by just getting water pushedover the lip of the fish tank when it can start to flow downward intothe bucket. I find that using this method always makes the aquariumunnecessary messy and often creates a mess. I also find that this isthe most difficult method to use to get a siphon started.
The Importance of Water Flow and Movement - Reef Aquarium
Fitting a sump to an existing aquarium is probably the most complicated part of installing it. In order to fit all the pipework that allows the water to flow between the aquarium and sump, you may have to drill some holes in the main aquarium. Obviously, you don't want to start drilling holes in an aquarium that already has all the fish in it. Therefore the tank really should be prepared for a sump before any fish are added.
FAQ #19: How much water flow do I need in my reef aquarium
We want the flow to come from the back of the aquarium on top, slight ripple but not breaking the surface of the water, and move to the front glass, down the glass to the plant surface (substrate), and then across the plant surface to the back glass and up the back glass to create a circular front to back flow. This will contact the tiny foreground plants as well as the rest with CO2 and nutrients, and keep ammonia pockets from forming in otherwise dead spots which then attract algae.Is it a reef tank? Do you have a sump? How will the water produce gas exchange? How will the water carry nutrients to the filtration system? Is this a biotope? Is this a planted aquarium? WHAT TYPE OF FLOW DO YOU WANT?Whether you plan to set up a small invertebrate tank or a seven hundred gallon aquarium, you will need to think about water movement and flow design.This is what people describe when they usually say Random Flow. Chaotic Flow means that the moving water will make contact with water moving in a different direction. Example- you take two powerheads on opposite sides of the aquarium and you face them both towards the middle. At the middle of the aquarium the two bodies of fluid run into each other and the momentum is dissipated by pushing water in different directions. This is certainly NOT random. In fact it is very predictable. If you see an aquarium like this and look at how the water is moving, you can predict how the water will be moving 5 minutes later, 10 hours later, and even 2 weeks later. It will be moving just like it is right then and there in front of you.