Thank You Thank You & Good suggestion...I'll give him a call after Thanksgiving and order the proper height. Yes the mattenfilter system!! We may not have the air tube inserted as some do. The eheim should have ample draw for the filter. Nico did caution that these need oxygen, but he also said that this should work fine. One way or another I'll have air. I'll chat with Matt about it when we order and just see. What I like is the heater will be tucked back there also. I will post up the final set up.
GF kick off so much ammonia the filtration needed to deal with that is excessive. We do 80% water change a week. This tank has 1 Ehiein, 2 HOB AquaClear & a sponge filter. Goal===1 Eheim and Poret filter. Will keep one aquaclear till the poret gets up and going. If I still need more I'll add another eheim canister back there.
This is the "whale" tank as we call it. Big beautiful GF, but they don't like a lot of current..another reason for the poret system.
Thanks everyone...and as always ...your comments really help