Hi,
I have this (little) problem in my main tank. Older leaves of my plants are getting brownish ( like they are dirty). It happens on most of them, but some seems more prone, like L. Cuba and Syngo Belem.
What is the cause and what can be done. Other than that , everything is great.
155 gal.
2 pendants lights 250 W each ( MH Venture 5000K day) 9 hours ON.
2 powerheads for flow.
Temp is 80 F (discus tank).
CO2 injected (glass diffuser) around 25 ppm with CO2 controller ( PH at 6.5).
GH = 2 DH, KH = 3 DH, NO3 = 10 ppm, K = ? ... added daily, Iron = 0.1 ppm, P = 1-2 ppm.
Fully automated water changes = 12 gal everyday.
Very soft tapwater : 2 Dh for GH and KH.
Dosing EI daily with peristaltic pumps : adding CSM+B,KNO3,K2SO4,MgSO4, Iron DPTA,K2PO4.
Adding 20 ml Excel daily.
Thanks for advice !
Substrate is plain river gravel, although some parts in the tank have been replaced by florabase.
I have this (little) problem in my main tank. Older leaves of my plants are getting brownish ( like they are dirty). It happens on most of them, but some seems more prone, like L. Cuba and Syngo Belem.
What is the cause and what can be done. Other than that , everything is great.
155 gal.
2 pendants lights 250 W each ( MH Venture 5000K day) 9 hours ON.
2 powerheads for flow.
Temp is 80 F (discus tank).
CO2 injected (glass diffuser) around 25 ppm with CO2 controller ( PH at 6.5).
GH = 2 DH, KH = 3 DH, NO3 = 10 ppm, K = ? ... added daily, Iron = 0.1 ppm, P = 1-2 ppm.
Fully automated water changes = 12 gal everyday.
Very soft tapwater : 2 Dh for GH and KH.
Dosing EI daily with peristaltic pumps : adding CSM+B,KNO3,K2SO4,MgSO4, Iron DPTA,K2PO4.
Adding 20 ml Excel daily.
Thanks for advice !
Substrate is plain river gravel, although some parts in the tank have been replaced by florabase.