okay well I dont have a drop dispenser thing so um, how full should I fill the cap on the 250ml lol
need to get one then! Because Prime is so concentrated, I have found it dangerous when dealing with very small tanks. I have killed WCMM in a 5g tank - twice.
(It took the second round to make the connection. I still really, really regret this. So sorry little fish!) I highly recommend understanding the correct dosage and using a proper measuring devise. No guestimates.
Most of the time when I top up an aquarium, I use a pitcher or bucket to hold my tap water. I add the amount of Prime for the pitcher or bucket by the drops. When I do large water changes with my Python, this is when I add enough Prime to treat the whole aquarium.
I really like those little 50 mL bottles and just squirt out 2 drops per gallon. It is easier than trying to measure out 1 mL by the threads. You can get them at Pet Smart.
When I do my large water changes, that is when I dose an whole aquarium's worth of Prime.
This is EXACTLY how I use Prime in my tanks. GMTA!
Something that isn't mentioned is how much Prime is too much. Like, what is the LD50 for Prime? I don't know.
Important point. A double dose maybe okay for most fish, but a triple dose - lethal for some. And, a double dose just treating water you're topping off, or adding back 10% or 20% by buckets; is entirely different from tripling
a 50% waterchange adding back to the full volume of the tank!
I recall reading a forum response from Seachem where they said not to be concerned about overdosing as long as you are close to the bottle instruction amount.
I highlighted this for emphasis. Again, close to the amount instructed.
Seachem has a sub-forum on the other planted aquarium website. Here is where the discussion ran about overdosing Prime:
Hoppy, you actually posted during this discussion!
I called the company that makes prime.
they said just dose the water you are adding, not the volume of the tank. You can dose the colume of the tank but it is not necessary and they said you can add it before, during or after just do it at the time of the water change.
I forsee you have now started a controversy!!!! Are you quite sure you undestood them; and they you???