xZaiox
Member
Hi guys,
My rotala green has stunted growth, and from my understanding the most likely cause will be CO2? The tank is EI dosed with ferts.
Anyway, my pH degassed for 24 hrs is 8.2, and having just measured my tank at the end of the day, the pH appears to be 6.55?? I initially tested with API liquid pH test, but that number seemed like a crazy high swing to me, so I then calibrated my pH pen with fresh buffer powder and sure enough... yup, 6.55. My drop checker in the tank appears lime-green, but if the drop checker is taken out of the water then it looks strongly yellow. My fish breathe faster but don't gasp at the surface, although my shrimp aren't very active while the CO2 is on. I've been just slowly raising the CO2 until I believe the fish show distress, but surely a 1.7 pH drop isn't safe already? I feel apprehensive to push it further, but I also want this stunted rotala growth to improve.
My dKH is about 10, and dGH about 20. Light is a twinstar 900s currently dimmed to 40% with a 6 hour photoperiod, CO2 comes on 4 hours before lights and is stable within 0.1 pH. I'm currently dosing full EI with extra FeDTPA and FeEDDHA due to the hardness of the water. The flow could probably be improved in parts of the tank, but this patch of rotala in the pictures is in the path of a strong flow, all leaves sway in the current.
Any ideas? I'm wanting to know whether this CO2 is already too much or should be pushed further, as well as what typically causes stunting in this plant.
My rotala green has stunted growth, and from my understanding the most likely cause will be CO2? The tank is EI dosed with ferts.
Anyway, my pH degassed for 24 hrs is 8.2, and having just measured my tank at the end of the day, the pH appears to be 6.55?? I initially tested with API liquid pH test, but that number seemed like a crazy high swing to me, so I then calibrated my pH pen with fresh buffer powder and sure enough... yup, 6.55. My drop checker in the tank appears lime-green, but if the drop checker is taken out of the water then it looks strongly yellow. My fish breathe faster but don't gasp at the surface, although my shrimp aren't very active while the CO2 is on. I've been just slowly raising the CO2 until I believe the fish show distress, but surely a 1.7 pH drop isn't safe already? I feel apprehensive to push it further, but I also want this stunted rotala growth to improve.
My dKH is about 10, and dGH about 20. Light is a twinstar 900s currently dimmed to 40% with a 6 hour photoperiod, CO2 comes on 4 hours before lights and is stable within 0.1 pH. I'm currently dosing full EI with extra FeDTPA and FeEDDHA due to the hardness of the water. The flow could probably be improved in parts of the tank, but this patch of rotala in the pictures is in the path of a strong flow, all leaves sway in the current.
Any ideas? I'm wanting to know whether this CO2 is already too much or should be pushed further, as well as what typically causes stunting in this plant.