diy sump/filtration question
so I have a 55 gallon All Glass aqarium with a broken top middle brace that I bought cheap a while ago, it holds water, even full. I had comtemplated selling it, but not I'm jumping back into it and wanting to do a full custom built background. I've done a few and I'm excited to do another.
So my vision is a full backwall rock/wood layout, while the main area of the tank ends up divided into three seperate areas only about 10 inches tall, each area designed for a male betta. Between each area is a divider wall rocked over to look legit, with screening in the divider to allow water flow.
now my biggest concern so far is figuring out what to do for filtration.
first thought is to try and rig up my eheim to deal with the lower water level, and using the output side to help create waterflow/waterfall over the back rockwall.
second thought is to create a sump, I have a few 10 gallons and a 20 gallon long sitting around I can easily turn into a sump. but the sump I'm thinking would almost certainly cause me to have to drill one of the side panels down low to put in the overflow, and the resulting pump needed to create enough head flow to push water back up might be too strong in many ways.
now I don't want to go sponger filter/air pump route, I'm trying to get cute and hide it. I have considered pumpless since it is male betta's but I still want water flow over the back wall....
would it be even easier to just create a sectioned area in a back corner for a pump to just shoot water up tubing to the top of the wall and down it, and let that be the filtration?
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