Planted Tank Guru
Join Date: Apr 2011
Location: Hamilton, Ontario, Canada
The problem with that is that if one intake gets clogged, anything, it will keep putting 50% of the water in the tank and not pulling 50% back and equal flood. There is no way to really do it that way and get it exactly 50%/50%. Even 0.5% off different of intake vs/outtake and it will flood. What some people do is put the intake in one tank, outtake in the other tank and the make a couple of U pipes to sit between the two tanks that start a siphon on so it keeps the balance between the two tanks. Really though, even that way has limitations because there is no intake in 1 of the tanks and its not pulling in any debris, etc. The other thing is that if a bacteria/virus/etc gets into 1 tank, it will take down the second tank with it. Buy a second filter. lol. Easiest, safest way without risking killing 2 tanks or flooding.
20g platy, , 2 x 10g shrimp, 3 x 20g shrimp, 7.5g shrimp and 1 great dane/mastiff puppy.
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