Subject says it all. I moved my tank back in July across town. Due to cyano, I took the time it was torn down to replace the sand and scrub the rock. Used 60 pounds of fresh Fiji Pink, and scrubbed all my rock with a stiff brush 3 times in fresh saltwater every time.
It's a 55g sumpless system.
All reassembled, probably 45 gallons new water, made with RO/DI. Checked params after a week, nitrates at 80, salinity 1.023, CA at 410, phosphates at <.025. dKh 5.5. Mixed 10 gallons of water. After 24 hours the 10g was 1.023, CA 410, Nitrates and Phosphates 0, dKh 9
Did a 10g water change. After 1 hour, checked dKh and it was 7.
The next day, back to 5.5
Thought my test kit may have been funky, so took the water to the LFS. Same reading.
Thinking there may be High CO2 in the house, I ran the skimmers air intake out the window. Next day, still 5.5. Did another 10g water change, and same thing. dKh came up to 7 then dropped to 5.5 within 24 hours.
Only coral is 2 frags of Zoas.
So, I decide to dose sodium Carbonate. Followed the calculator for dosage amounts. Dosing 1tbsp/day, it goes up to 7 with a check after an hour, and again, within 24hours drops back to 5.5... WTF?
Anyone else fought this?
55g no sump, reef octo new style HB90 skimmer, ecobak pellets, dual powerheads, and an emperor 400 HOB filter without cartridges used for water movement.
2 48" actinic and 2 12k t5's
300W heater, tank stays at 78 +- 0.2
Sent from my SM-N920V using Tapatalk
It's a 55g sumpless system.
All reassembled, probably 45 gallons new water, made with RO/DI. Checked params after a week, nitrates at 80, salinity 1.023, CA at 410, phosphates at <.025. dKh 5.5. Mixed 10 gallons of water. After 24 hours the 10g was 1.023, CA 410, Nitrates and Phosphates 0, dKh 9
Did a 10g water change. After 1 hour, checked dKh and it was 7.
The next day, back to 5.5
Thought my test kit may have been funky, so took the water to the LFS. Same reading.
Thinking there may be High CO2 in the house, I ran the skimmers air intake out the window. Next day, still 5.5. Did another 10g water change, and same thing. dKh came up to 7 then dropped to 5.5 within 24 hours.
Only coral is 2 frags of Zoas.
So, I decide to dose sodium Carbonate. Followed the calculator for dosage amounts. Dosing 1tbsp/day, it goes up to 7 with a check after an hour, and again, within 24hours drops back to 5.5... WTF?
Anyone else fought this?
55g no sump, reef octo new style HB90 skimmer, ecobak pellets, dual powerheads, and an emperor 400 HOB filter without cartridges used for water movement.
2 48" actinic and 2 12k t5's
300W heater, tank stays at 78 +- 0.2
Sent from my SM-N920V using Tapatalk
