Sump Set Up

alex11

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I have a 20g long and a 29 gallon that are going on the same stand, one on top of the other. I want to set them up as one system where the bottom works like a sump and have them both filtered with a canister filter with the input and output being in the 29g . The 29g will be a community tank and the 20g will have african clawed frogs so it will need lower flow than the 29. Anyone who can help please do not sure if that is even possible but please share your advice. Thanks in advanced.
 

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I wouldn’t do a filtration system like that.

Cross contamination would be too easy so if one tank gets a disease, the other tank gets it too.

I would get 2 different filters for the 2 tanks.
 
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alex11

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I know cross contamination is a risk but only one tank will have fish in it so does that reduce the risk? My frogs only eat live food but I feed them mainly ghost shrimp and earthworms they eat rosy reds occasionally but I wouldn't feed fish in this type of setup.
 

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alex11 said:
I know cross contamination is a risk but only one tank will have fish in it so does that reduce the risk? My frogs only eat live food but I feed them mainly ghost shrimp and earthworms they eat rosy reds occasionally but I wouldn't feed fish in this type of setup.
I wouldn’t do it. Another problem is parameter problems. If a fish or frog dies, the ammonia will rise in both tanks and can cause a mass die-off.
 
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alex11

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I understand the risks but plumbing wise I need help. Both tanks will be connected so I can over filter without stressing the frogs out due to too much flow and to dilute the frogs waste so I can do less water changes. The bottom tank will be very lightly stocked with hardy fish. Probably mollies to breed as feeders for my tiny frogfish maybe a pleco. I don't have the money to buy 2 canister filters right now.
 

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alex11 said:
I understand the risks but plumbing wise I need help. Both tanks will be connected so I can over filter without stressing the frogs out due to too much flow and to dilute the frogs waste so I can do less water changes. The bottom tank will be very lightly stocked with hardy fish. Probably mollies to breed as feeders for my tiny frogfish maybe a pleco. I don't have the money to buy 2 canister filters right now.
a 20 long and a 29 don't need canisters. They will suffice well with HOBs or just sponge filters.
 
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alex11

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The problem is the amount of filtration they need causes too much water movement and stresses them out. I need a way to have heavy filtration and low water movement. Right now I have a 55 gallon filter and they hide all the time but the tank is perfect, I had a 20 gallon filter and they were very active but the tank was a mess.
 
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