Thanks for the compliment, though most critics I received is "too busy", but that's what I like and wanted. Maybe that's doesn't look like a prize winning tank, but that's what I like, I have been always prefer busy pictures. :-)
Yes, I use pressurized CO2. A 5kg tank, pH controller, and a large Dupla style external reactor.
The tank's cycled for a few months now, but the substrate's been there for about a month, since the shipment of Flourite came late, and I had all my plants in pots while waiting.
Eheim pimp club #48
800L 100% Flourite
80L plant/shrimps nursery tank inconnected with the main tank
Total 600W HQI, 2 X 5200K 2 X 6500K
Eheim 2028 X 2 2080 X 1
Dupla Substrate Heater
Dupla S external reactor
Aquamedic 2hp & Teco R15 400W chillers
Sega pH Controller
Light period: 6 hours on each bulb across 12 hours
Water Parameters: pH 6.4, KH 2, GH 1, NO3 40, PO4 1 TDS 250