Hi guys i have a 75 Gallon tank that i've been planning on making into a Paludarium for Red eyed Tree frogs and maybe some tetras, unfortunately i can't figure out a way to properly filter it. I originally intended to use an aqua clear 70 but priming it and getting water suction was nearly
impossible so i bought a 264 GPH canister filter and surprisingly i still have the same problem. Is there anything i can do, maybe buy an in-tank filter or drill a hole on the side of the tank?! I'm considering leaving the whole frog idea and getting a boring planted tank instead.

Here's a current pic of the tank (Right photo): Sorry for potato quality


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