My topper of choice are glass cartotanks. I currently have several IBTanked cartotanks, a Boge F16v2 (not a fan of this one, but it works), and a Cirrus Tank. I'm looking to try others. Phiniac is on my list, but are there other glass cartotanks I should consider? Seems that many I've seen mentioned are polycarbonate or acrylic. Like Bella tanks. I love the look of those, but it's a bummer the tubes are plastic. I've also looked into Kir Fanis tanks, but those are plastic too. Are there vendors who sell replacement glass tubes for those two tanks?