If the speed (flow) is too high, you'll need to make the baffle spacing thicker than the "standard" one inch. The only time you'll need to worry about the speed of the water moving through your sump is if you plan on putting baffles in to reduce microbubbles in your DT from your skimmer. Same with the skimmer, that skimmer pump will pump the same fixed amount of water into the body of the skimmer where the actual filtration occurs regardless of how quickly the water is moving past the opening. The heater will put X amount of energy (heat) into your water regardless of how quickly it moves through. However, the speed at which the water moves through your sump has no effect on the equipment. If you choose a smaller sump, the water will appear to move through it faster because you can see more turbulence and it will make the trip end to end faster because there's a shorter distance to go. The water "moves" through your sump at a given rate based on your return pump. ![]() ![]() IMO its best to size your return and sump correctly and use other methods (Powerheads or Closed Loop) to create flow in the display. This could be offset with a larger sump to some extent. Many people try to use a high power return pump to create flow in their tank but that just pushes water through their sump too fast and lessens the efficiency of the equipment in there. Skimmer seems to pull the most waste at that rate and heater/chiller appear to be operating the most efficient. Based on my experience, the best I have found is a sump 25% the size of my display with a return pump that is turning my display over 4 times per hour. That being said, I dont know what the best ratio is. It is important to size your sump and return pump correctly so that you get the most efficiency out of your heater, skimmer, etc. The smaller your sump, the faster water will move through it so the less time your heater and skimmer have contact with the water. See below for an example of substrate volume worked out using our Aquarium Gravel Calculator.There is a connection between the two. Repeat this process until you have washed all of the gravel. Once you stir the gravel around with your hand a few times, then drain the water, repeating 3 or 4 times until the water you drain from the bucket is relatively straightforward. After that, fill the bucket roughly 1/3 to the top, then fill the bucket with water until the water level is approximately five centimetres above the gravel. As a result, washing gravel will be easy and not very time-consuming. There are almost always small particles and broken down gravel, making your Aquarium water cloudy after adding substrate.įurthermore, It is a good idea to have a bucket around the home beside your Aquarium so that you can prevent other chemicals and foreign matter from entering your aquarium system. However, some Aquarium Gravel comes pre-washed. Most importantly, make sure you wash your Aquarium Gravel and Sand thoroughly. ![]() Finally, enter the desired height of the substrate (not the size of the Aquarium) Then the amount of substrate needed will appear at the bottom. ![]() Use the calculator on the left for Centimetres or the one on the right for Inches. Secondly, enter the Length and Width of your Aquarium. Firstly, select if you are putting gravel or sand in your tank.
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