Precisely. According to the instructions its 16 drops = 1ml. You would need 32 drops (or 2ml) to get to 0,5 on 10,5 gallons, or roughly 48 drops (or 3ml) in your 15 gallon.
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If the bottle has a dropper cap, use 20 drops (1 mL) per 40 L (10.5 gallons*) the first day, wait 48 hours, then repeat. On non-dropper caps, each inner ring is 1 mL. In freshwater use half dose. Final copper concentration is 0.5 mg/L (0.25 mg/L in freshwater).
That is the new version, which I believe is slightly more diluted (so you need to add more drops). I have the same bottle as the picture posted by Volpone with the 16 drops.As per Seachem's website: http://www.seachem.com/Products/product_pages/Cupramine.html
Well, reading through it again I saw it does not make sense what I just said, because in both cases Sachem claims it is 1ml. So I guess the solution has the exact same potency. The difference is probably the dropper in the new bottle is slightly tighter...?
Any clear idea to the case i have ? Is it because the Cupramine or because im adding the drop slowly ? I did it with in 4 or 5 days .
You should contact Seachem's. It seems to me like a bad reagent so I would not continue to dose to chase the color of the reference sample because you could significantly overdose and kill all fish.Any clear idea to the case i have ? Is it because the Cupramine or because im adding the drop slowly ? I did it with in 4 or 5 days .
I did already and send them email right now before my post here ,already i lost my blue star leopard wrasse even before i reach my recommended dose. Also i get advice from wrasse lovers thread to not qt wrasses with Cupramine .
Any clear idea to the case i have ? Is it because the Cupramine or because im adding the drop slowly ? I did it with in 4 or 5 days .
Unfortunately that what happen with my blue star leopard .I honestly am not sure the answer. Cupramine is easily absorbed so if you have any live rock or sand in there it will absorb a great deal and it'll take a lot more than it says to reach proper dose.
I honestly am no longer a fan of cupramine. I've had fish at 2-3+X the recommend dose without any issues, even blue star leopard wrasses in fact I have successfully pulled 3 separate males through, two of them twice or more - I find cupramine ineffective.
I tested every other day sometimes every third with seachem's kit or sailifert. The rest were not easy to use or accurate with cupramine.