O2 level measurements I've got from my tank
I've borrowed a O2 meter from a friend of mine which he used in his reef tank, and got some quite interesting measurements.
Measurement taken 1.5 ft submerged in the middle of the tank, at least 6 inches away from nearest plant.
Photo period: 13 hours
Lowest point: 5.5ppm from about an hour before light on to light on.
Hghest point: 9.6ppm 2 hours before light out (100% Saturation)
Pearling point: 7.9ppm 8 hours after light on (pearling from injuried plants or weak nodes excluded)
O2 level can vary by as much as 1 ppm in different area of tank during photo period.
Hope you would find this interesting. Any other methods you guys would recommend me to try before I returning the meter?
Eheim pimp club #48
800L 100% Flourite
80L plant/shrimps nursery tank inconnected with the main tank
Total 600W HQI, 2 X 5200K 2 X 6500K
Eheim 2028 X 2 2080 X 1
Dupla Substrate Heater
Dupla S external reactor
Aquamedic 2hp & Teco R15 400W chillers
Sega pH Controller
Light period: 6 hours on each bulb across 12 hours
Water Parameters: pH 6.4, KH 2, GH 1, NO3 40, PO4 1 TDS 250