Sump help

[Fish Tank Travis]

Rule of thumb is u want the overflow pvc to flow roughly twice as much as the return pump. For example my return pumps 2900 gph, I have two 2" PVC overflows. Each 2" PVC overflow can flow roughly 2400 gph. If the overflows are stronger than the pump, the overfows will match the pump. For example in my main tank the water level is always constant, if I add water, the extra water will always go in the sump.

This is exactly what I try to recommend. You want the overflows to be able to handle double what the pump can flow. That way if one of them gets clogged the other, or other ones, can handle the full flow. Otherwise, you could easily end up with a flood.

 

[BMac91]

Agreed with the above, not ragging on anyones setup but if you are starting this from scratch I would do 2 HOB overflows just in case. I have used them in the past, they are not my favorite thing for overflowing water.

If glass can't efficiently be cut around you, then go to lowes or home depot, buy a small section of acrylic that will work for you, get the 2.99$ plastic cutting knife and a tube of silicone and you have yourself some non-glass baffles.

How heavily is the aquarium stocked, is it just the RD? You mentioned you are having to do water changes frequently, is that because of stocking levels or current lack of filtration?

 

[HEMP111]

If you have a Harbor Freight near by go and get one of there submersible pond pumps. I bought one almost 3 years ago and have never had the first problem with it. They usually run less than $40 and you can get a two year warranty.