Browning of HC

**Tian85** · 5th Nov 2010, 15:38

My HC is bubbling a lot but my HC is browning off at the same time

. My tank has been set up for more then a month. There are new groth of HC but it is very slow. The new grown will also brown off too. Anyone can help.

Tank specs
3ft tank, 50gallon.

CO2
30 ++ppm
Drop checker showing light green.

Fert dose per week
Ca(NO3)2 : 17.4 ppm Nitrate
KH2PO4 : 2.25 ppm Phosphate
K2SO4 : 15.75 ppm Potassium

Light
4 X 39W T5

Temp
26 to 27 degree

Photo of my HC as follow:
DSC03892.JPG

**blue33** · 5th Nov 2010, 17:15

CO2 drop checker show light yellow is better than light green. IMO Those drop checker is just approx gauge only, they are not very accurate.

**Tian85** · 6th Nov 2010, 14:03

my CO2 rate is around 5bps now. will increase to 7 or 8 to see how it goes. Thanks.

**Tian85** · 10th Nov 2010, 04:40

Is it possible that my HC browning is cause by too much light that cause it to burn?

**blue33** · 10th Nov 2010, 12:06

they are adjusting to new environment, most time converting from emmersed to submmersed will have this effect. also new setup will have brown algae or diatom algae attack. Adding otto and adding some seachem excel and change more frequent water do help.

**alvinchan80** · 10th Nov 2010, 15:30

Originally Posted by blue33

they are adjusting to new environment, most time converting from emmersed to submmersed will have this effect. also new setup will have brown algae or diatom algae attack. Adding otto and adding some seachem excel and change more frequent water do help.

shifu blue, so the diatom you telling me about are those 'slime' which is on my HC? I am currently having some melting leaves from HC as well as upwards growing ones.. but other then that, i think alright...