Maintaining CO2 while using a sump

Lou Ahlquist

New Member
Oct 7, 2018
Central NJ
I haven't been on this site for a few years after my 250 gallon sprung a leak. I took a break but I am now in the process of getting a 60x24x24" tank going. I'm going to get a custom aquarium and really wanted to use a sump for all the advantages they offer. Unfortunately, I was always filling up my CO2 tank with my last tank (a deep dimension with 2 overflows and homemade sump).
I was thinking of trying a {custom aquariums) seamless sump with their stealth overflow box. It looks like these overflows don't agitate the water too much. The sump looks like it can be sealed fairly tight being that it has glass lids. I would position the return water under the surface to minimize CO2 loss at the surface. I'm hoping to completely cover the top.

Does anyone have experience with this kind of setup or have any recommendations as to what I can try?
If I could be pointed to any articles dealing with this that would be appreciated too.