50 gal tank is 6 months old, SPS dominated.
Everything was going great then most of the SPS turned very pale 4 days ago and I've lost 10 of them since then.
sg - 1.025
cal - 450
mag - 1350
alk - 10.5 dkh
pH - 8.0
nitrate - 0 with API test kit, 10 ppm with Elos (consistently)
phosphate - 0.05 (salifert)
*No GFO, no bio pellets and no skimmer
*was carbon dosing with red sea No3Po4x (2ml per day)
*2 kessil LEDs sitting 6 inches above water running at 30% intensity
This issue occurred right after two things:
(1) completely replaced white sand with BRS Hawaiian black aragonite sand
(2) dumped 500ml of RO/DI + washing soda (A&H sodium carbonate) into tank to increase pH
Based on the pictures, the coral tissues are breaking off.
Please help me figure out what the issue is and how I may stop the bleeding.
Thank you all.
-Dave
Everything was going great then most of the SPS turned very pale 4 days ago and I've lost 10 of them since then.
sg - 1.025
cal - 450
mag - 1350
alk - 10.5 dkh
pH - 8.0
nitrate - 0 with API test kit, 10 ppm with Elos (consistently)
phosphate - 0.05 (salifert)
*No GFO, no bio pellets and no skimmer
*was carbon dosing with red sea No3Po4x (2ml per day)
*2 kessil LEDs sitting 6 inches above water running at 30% intensity
This issue occurred right after two things:
(1) completely replaced white sand with BRS Hawaiian black aragonite sand
(2) dumped 500ml of RO/DI + washing soda (A&H sodium carbonate) into tank to increase pH
Based on the pictures, the coral tissues are breaking off.
Please help me figure out what the issue is and how I may stop the bleeding.
Thank you all.
-Dave