New 400GL setup, PH 7.54, please help.
I just setup my first fresh water tank last night. The water is still not completely cleared up. I have been keeping marine and coral tanks for 5 successful years and I felt it is time to add something new.
The tank is loaded with plants but no fish yet.
The PH this morning went up from 7.38 to 7.54 and keep going up after the lights are on.
I increased the CO2 dosing to 70 bubbles per minute but still can not bring down the PH.
I am using a Hana Industrial grade PH controller newly calibrated.
I thought the optimal PH would be 6.5 - 6.8 for planted tank. How do I bring down the PH? Can I increase my CO2 dosage which is already over 1 bubbles per second?
How often should I change water? I am asked to do 1/4 water change every other days.
When can I start stocking fish?
I am using well water with PH of 7.1 - 7.3
I do have a RO unit for my marine water tank but it won't be easy change big amount of water with it due to the location.
The information as following as following:
Tank dimension: 215cmX90cmX75cm
Substrates: 12 ~ 20 cm black sand with Tetra fertilizer in the middle layer
Lighting: 20wx16 flourescent daylight. Will upgrade to 12X36w PC Osram cool daylight today.
Mainpump: 7000 liter per hour submersible with spray bar
Internal Circulation: 3000 liter per hour submersible with spray bar
CO2 dispersed by small submersible pump: 1 bubble per second
Filter: Overflow to 4 chambers each L30cm X W70cm X H30cm loaded with bio balls (1st chamber) and fiber mats.
Temperature: 25 degrees celsius