https://www.reef2reef.com/threads/macro-reactor-build-list.303530/#post-3717986 I like this! Thinking about trying.
Interesting. Do you think a RODI canister could be modified for this? Once I get my system upgraded I'll have a spare canister.
I was going to do something like this but ended up drilling a 5.5 gallon and its is fed from my frag tank overflow. I just didn't want to add another pump to my system and I am thinking about re-plumbing the return pump and adding in more fitting to feed the reactors I already have installed because that pump is the loudest pump in the room. I think a trip to hobby lobby or bed bath and beyond to find a clear glass vase with a cap would be exactly what you would need.