I've been browsing this site for a few years, but am new to posting. Having seen so many beautiful and inspiring tanks here, thought it would be fun to jump in. Really glad to keep learning from everyone. Here's a 75G I've had for 4 years.
Light: Marineland planted LED
Filtration: Fluval 406
CO2: DIY (2 3-L botles) with ISTA reactor run by Maxi-jet powerhead
Substrate: Ecocomplete capped with torpedo beach
Flora: Myriophyllum mattogrossense, Ludwigia palustris, Heteranthera zosterifolia, Crypt walkeri lutea, Crypt parva, Crypt wendti 'red', Rotala wallichii, Pogostemon helferi, Bacopa australis, Vallisneria americana var. biwaensis, Cabomba furcata, Staurogyne repens, Hemianthes callitrichoides, Microsorium pteropus v windelov, Anubias nana petite
Fauna: Red cherry shrimp, celestial pearl danio, neon tetra, glass bloodfin tetra, marbled hatchetfish, Otocinclus, panda cory
Sadly, I finally lost the battle with BGA/cyanobacteria. After trying everything (strong circulation, huge water changes, nitrates, etc), including heavy dose of erythromycin, I just hauled everything out, replaced the substrate, and am starting from scratch with pressurized CO2. Should be refreshingly reliable after DIY for so long. Will update as the new tank is set up.