[Reefer769]

ninong, i need your help. i had to syphon out 2/3 of a gallon to pick up all the little black carbon pebbles that were on the bottom, so i added 2/3 gal of water back into the tank. today i need to add the second dose of the cupramine copper. should i just go ahead and put 1 ml in or do you think i shoukd put a little more or a little less. becuase i probably had just under 10 gallons in there maybe even 9 when i put in the first 1ml. so by taking out 2/3 of a gallon of water could have taken the copper level down to about the right level for 9 gallons, sowhat do you think i should add today? 1ml?

[Ninong]

I think you should add just 1 ml, expecially if you do not have a copper test kit handy. That should put you somewhere between 0.4 and 0.5 mg/L after this dose.

[Reefer769]

alright thanks a lot ninong, between .4 and .5 i think would we just right.