GSA going mad !

[swackett]

Hi,

I have a 125l tank with 2x20w T8 tubes. I'm injecting 2bps of C02 and have an eheim 2324 pro external filter.

The tank was setup just before Christmas and everything seems to be growing and up to about 2 weeks ago no algae.

I was dosing 2ml of TPN+ and 2ml of KH2P04 daily (should be 0.20ppm in total per day). I upped the dose to 3ml of TPN+ and 4ml of KH2P04 (0.37ppm per day) but the GSA is still gorwing and covering the anubias leaves.

Any advice appreciated.

Thanks

 

[Dolly Sprint 16v]

Could you please advise as to how long your lights are on for. Long periodicity of lighting can contribute to GSA as well as high lighting.

Regards
Paul.

 

[swackett]

okay, erm... They are on for 8 hours I think (at work at moment)

 

[LondonDragon]

Yeah check the lighting levels and you could also just increase the KH2P04, the anubias are mad for it.

 

[plantbrain]

CO2 and/or more PO4.

I add 2-3ppm 3x a week for PO4.
No one can overdose PO4.

You can underdose however.
For CO2, be careful and slowly and methodically adjust it step wise.


Regards,
Tom Barr