Well this is a journal of sorts (lets just say that my planted tank is a mess with lots of algae and a system that I hate ). So the present set up: 48" x 18" x 24" (L x W x H) acrylic aquarium Eheim professionel II 2128 (sponge, efisubstrat and polymer wood), partial tee off to dupla external CO2 reactor Eheim 2215 (sponge, polymer wool), pumping through rainbow lifeguard heating module (visitherm 300 watt heater controlled by Dennerle Duomat) 2 kg CO2 bottle with Dennerle regulator and aqua medic solenoid Aqua medic CO2 bubble counter (and with hindsight will NOT be buying this thing again, there are better bubble counters out there) Arcadia 48" T5 lighting (4x54 watts) luminaire I will ditch the Dennerle duomat and Dennerle ph controller and install my aquatronica controller instead, this will be use to control temperature, timing of lights and CO2 solenoid and pH monitoring via the pH probe, the controller will NOT be used to control the solenoid base on readings from the pH probe, although I can probably program a min pH level cut off as a safety precaution. Using the aquatronica as a multi timer makes sense since you have one reference clock and not many when you employ multiple digital socket timers (and they do go out of sync with time). I will also probably ditch both the professionel and the 2215 filter and replace them with 2 x 2217 for powerful water movement and also because I think the professionel is horrible Not sure about the reactor/bubble counter arrangement. A beetle counter would be nice. I originally wanted to use ADA Aqua Soil, but since it leaches ammonia in the first few weeks and I don't have a separate tank to house the fish for some time, I have to make do with ECO Complete. I've been told that it's a good substrate so we'll see. No photos yet, plants coming in next week, off to get the ECO Complete today.