So here's my GSA algae issue. I'll try to provide as much info as possible on my set up because this problem is making me want to gouge my eyeballs out!
Tank: 48" / 240l Fluval
Params: All normal; Ammonia 0 Nitrites 0 Nitrates 10-20ppm, Ph 7.4, kH 6-7 gH 9-10
Lighting: Fluval Fresh & Plant 48" (59w) at 75%
Photoperiod: 7hrs LED. Room exposed via window to soft, diffused light from adjacent conservatory. Not what I would consider strong daylight/sunlight by any stretch. I have curtains drawn for most of the day when I can.
Gas: Non-CO2
Filtration: 1x Eheim 4e 350+ 1x Fluval 306
Circulation: 2/3 length spray bar (see pic) for medium to strong surface agitation. Flow is directed at the surface which then flows to front glass creating a 'corkscrew' general motion throughout the tank. The outlet from the Eheim (right side) is a single 12" spray bar angled at 45 deg down. In all I'd say the water circulation is good.
Fertilisation routine:
Mon: Flourish 2.5ml
Tues: Excel: 5ml
Wed: 1/16th tsp KH2PO4
Thu: Flourish 2.5ml, Excel: 5ml
Fri: Rest Day
Sat: 1/16th tsp KH2PO4
Sun: Excel: 5ml
Water Change: 10-20% every three weeks.
Stocking: 8x Cardinals, 8x Ember Tetra, 6x Misc Corys, 14x Green Tiger Barbs, 8x Misc Platys, 3x SAEs, 15 Amano Shrimp, 9x Rummy Nose Tetra - nothing that produces heavy waste...
The above regime (recently started) appears to have made good improvement with GSA on my Anubias but on the rocks it's just getting worse. See pics - yes, they're supposed to be grey Seiryu. One puzzle is why the substrate isn't getting this although I appreciate that because it's quartz based may not be as porous.
What would you do to correct this GSA and, to help me understand, why?
Fire away if I've forgotten to add anything.
Tank: 48" / 240l Fluval
Params: All normal; Ammonia 0 Nitrites 0 Nitrates 10-20ppm, Ph 7.4, kH 6-7 gH 9-10
Lighting: Fluval Fresh & Plant 48" (59w) at 75%
Photoperiod: 7hrs LED. Room exposed via window to soft, diffused light from adjacent conservatory. Not what I would consider strong daylight/sunlight by any stretch. I have curtains drawn for most of the day when I can.
Gas: Non-CO2
Filtration: 1x Eheim 4e 350+ 1x Fluval 306
Circulation: 2/3 length spray bar (see pic) for medium to strong surface agitation. Flow is directed at the surface which then flows to front glass creating a 'corkscrew' general motion throughout the tank. The outlet from the Eheim (right side) is a single 12" spray bar angled at 45 deg down. In all I'd say the water circulation is good.
Fertilisation routine:
Mon: Flourish 2.5ml
Tues: Excel: 5ml
Wed: 1/16th tsp KH2PO4
Thu: Flourish 2.5ml, Excel: 5ml
Fri: Rest Day
Sat: 1/16th tsp KH2PO4
Sun: Excel: 5ml
Water Change: 10-20% every three weeks.
Stocking: 8x Cardinals, 8x Ember Tetra, 6x Misc Corys, 14x Green Tiger Barbs, 8x Misc Platys, 3x SAEs, 15 Amano Shrimp, 9x Rummy Nose Tetra - nothing that produces heavy waste...
The above regime (recently started) appears to have made good improvement with GSA on my Anubias but on the rocks it's just getting worse. See pics - yes, they're supposed to be grey Seiryu. One puzzle is why the substrate isn't getting this although I appreciate that because it's quartz based may not be as porous.
What would you do to correct this GSA and, to help me understand, why?
Fire away if I've forgotten to add anything.
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