CAPT_Dave
New member
Anyone know what this is? It's like the worst toddler sneeze imaginable.
It started showing up in my sump about 2 weeks ago. Coats the cheato and gets caught in this course filter material I have. I threw out about half my cheato last weekend. It was over grown and half covered in the slime. That may have exasperated the pH issue I will describe later in this post.
I'm wondering if it's a sign of too much carbon dosing? Was dosing 17 ml vodka per day in 150 gallon total volume system. Dropped it to 10 ml per day last week. NO3 and PO4 are well controlled. Maybe too well. This is 1 week's worth of growth. There is a little on underside of rocks in DT but no where else.
Parameters (all Salifert):
Alk 8.6 dKH
Ca 420 ppm
Mg1300 ppm
NO3 0.2 ppm
PO4 0.01 ppm
pH 7.68
Salinity 1.024
I have noted a drop in pH over the last several weeks from the low 8s to the mid to high 7s. I don't generally chase pH and never add anything to correct for it except kalk in top off. Since pH has dropped I noticed Alk climbing and suspect a drop in coral growth. I've since stopped dosing 2 part (Randy's anhydrous baking soda) and kalk is enough but now pH falls farther at night. I'm going to try CO2 scrubbing via skimmer intake but have never needed to before. Could this be related?
Coral (LPS, zoas, and some Monties) and fish seem to be doing ok. Good color and pollyp extension.
Thanks in advance for your thoughts.
Dave
Sent from my Pixel using Tapatalk
It started showing up in my sump about 2 weeks ago. Coats the cheato and gets caught in this course filter material I have. I threw out about half my cheato last weekend. It was over grown and half covered in the slime. That may have exasperated the pH issue I will describe later in this post.
I'm wondering if it's a sign of too much carbon dosing? Was dosing 17 ml vodka per day in 150 gallon total volume system. Dropped it to 10 ml per day last week. NO3 and PO4 are well controlled. Maybe too well. This is 1 week's worth of growth. There is a little on underside of rocks in DT but no where else.
Parameters (all Salifert):
Alk 8.6 dKH
Ca 420 ppm
Mg1300 ppm
NO3 0.2 ppm
PO4 0.01 ppm
pH 7.68
Salinity 1.024
I have noted a drop in pH over the last several weeks from the low 8s to the mid to high 7s. I don't generally chase pH and never add anything to correct for it except kalk in top off. Since pH has dropped I noticed Alk climbing and suspect a drop in coral growth. I've since stopped dosing 2 part (Randy's anhydrous baking soda) and kalk is enough but now pH falls farther at night. I'm going to try CO2 scrubbing via skimmer intake but have never needed to before. Could this be related?
Coral (LPS, zoas, and some Monties) and fish seem to be doing ok. Good color and pollyp extension.
Thanks in advance for your thoughts.
Dave
Sent from my Pixel using Tapatalk
