Cegs,
Thanks for your relply. The powerhead I am using currently does have a single point source of water, so tonight I will move it higer and put the diffuser attachment on (it's a flat-ish looking thing that softens the water).
I have the Co2 going into the intake of my fluval external and unfortunately I don't have the spraybar attachment, I have the standard one that the come with. The Co2 comes on 1.5 hours before lights on and runs until 1/2 hour before lights off. I have a siesta period with the lights during the day, but the Co2 runs throughout this time.
I will probably buy the nano koralia next week, which I hear has a more 'non-direct' flow pattern, at the same time I think i'll grab some Flourish Excel...
Cegs, I've modified your dosing regime a bit... I'm adding 1/2 tsp of K2SO4 on Macro day... It's just that I noticed some brown pinpoint spots on some of the stem plants, which I believe is due to lack of K... Am I wrong?
Justin