Biologic
Active Member
Hey guys,
So a month ago, I ran some ZeoLite media and curprisorb to quickly remove copper out of my tank. Since two weeks ago, I removed the zeolites, and then 9 days ago, I removed curbisorb because at this point, plus the 8 water 50% water changes I've done, I can safely assume through calculation (ICP results incoming to confirm) that the copper is at very low non-toxic levels or near zero.
What prompted me to measure my potassium is my montipora caps and digitas seemed very upset -- STN in the shaded parts, dull grey color, no polyp extension -- the values tested with Salifert were 320 ppm of potassium. My acroporas since the copper poisoning have recovered and have their color back!!
My corrective course of action -- I made a stock solution of 100 grams of potassium chloride to 1 liter of water, since the 19th of March until today, I've dosed 423 mL of this solution into my water via my Neptune dose. By that planted calculator website that Randy has referenced in the past, each mL of this solution in my 50 gallon system water, should raise my potassium by 0.31 ppm. Correct me if I am wrong -- I should be at today ~450 ppm of potassium. Yet, I tested again today, I am only at 360 PPM, and have tested throughout, and it seems that I cannot get much higher than 380 ppm. Yes, I've seen the values drop while dosing...
Thinking that my chaeto refugium was robbing some of the potassium, I pruned it heavily. But assuming that I have no testing error, what could be the cause? Or is it the test kit? What else could it be?
So a month ago, I ran some ZeoLite media and curprisorb to quickly remove copper out of my tank. Since two weeks ago, I removed the zeolites, and then 9 days ago, I removed curbisorb because at this point, plus the 8 water 50% water changes I've done, I can safely assume through calculation (ICP results incoming to confirm) that the copper is at very low non-toxic levels or near zero.
What prompted me to measure my potassium is my montipora caps and digitas seemed very upset -- STN in the shaded parts, dull grey color, no polyp extension -- the values tested with Salifert were 320 ppm of potassium. My acroporas since the copper poisoning have recovered and have their color back!!
My corrective course of action -- I made a stock solution of 100 grams of potassium chloride to 1 liter of water, since the 19th of March until today, I've dosed 423 mL of this solution into my water via my Neptune dose. By that planted calculator website that Randy has referenced in the past, each mL of this solution in my 50 gallon system water, should raise my potassium by 0.31 ppm. Correct me if I am wrong -- I should be at today ~450 ppm of potassium. Yet, I tested again today, I am only at 360 PPM, and have tested throughout, and it seems that I cannot get much higher than 380 ppm. Yes, I've seen the values drop while dosing...
Thinking that my chaeto refugium was robbing some of the potassium, I pruned it heavily. But assuming that I have no testing error, what could be the cause? Or is it the test kit? What else could it be?
