I am running 3 x 32W CFL 6500K bulbs over a 50G tank. Tank is 35cm (13,7") tall, lights (lower rim of pendant) is at 55cm (21,6") from substrate
I run pressurized CO2 (bbs beyond count), dose EI, run a 2000LPH (520GPH) sunsun filter on a spray bar at the long side of the tank. Substrate is clay (cat litter).
I can grow plants, but I am struggling with Eleocharis Parvula
, cannot get it to carpet. I already "killed" a batch, I am on my 2nd attempt. Its been planted in mid November 2014. Only a few runners. I can see other people achieving a full carpet in less than 2 months...
I have just about finished the close enough par meter and will be taking readings soon.
But still, this begs the question: should I rule out light being a problem here?
Ideas & suggestions welcome.