Thanks Doodles. The 125 and the 20 are injected with pressurized CO2. The 125 is low light, so the CO2 rate is pretty low too, as that's my main pleco tank. The 20 is high light and has a high rate of CO2, so I only have a few plecos in it (4x L340's and a couple of juvie L144). The 15 is low light and is dosed with Excel, no CO2.Very, very nice 2wheels:clap::clap:
Do you use co2 at all?