Need help deciding on a new build upgrade for a IM 100ext tank and need help deciding on sump? Does bigger space matter, or having a reef matter. Rn I have a 75gallon tank with eshopps AR200 sump which is 30”x14”, skimmer, and refugium running. To save money can I use the same sump and buy a reefmat this guy is offering for $250 Or should I pass on roller mat. Or should I build one out a 40g breeder with Fiji kit which will be about $200 36”x18”. Also another person is selling a trigger 34 for $250 and can’t maybe fit the reef mat but will lose the refugium and another is selling Platinum 39” for $600 that has a mat but heard bad reviews and will have to change my ATO. I can decide