I have 4 IB tanks and I need more LOL But I don't want to jink my perfect cartotank experience by ordering something that might not be perfect, so for now I use my reliable Halo Triton clearos as backup
I hear you on waiting for an empty tank. I clearly don't have enough! I don't want to waste suck good juice in a clearo, but I can't always afford IBTanked. Got the Pyrex Boge f16 v2 carto tank for a cheaper option, and it works so far. Have a couple plastic Boge tanks on the way too, becaus they are cheap. Hoping they don't leak though. I know IBTanked just works, so despite cost I'm afraid to order enough carto tanks