Excel Overdose

Shouldn't over dose the water change dose, just the daily dose

15 gal = 7.5 ml @ WC, 1.5ml x 2 = 3ml @ double daily dose.

I agree with your assessment. At levels above what I listed, fish do act stressed.

 

easy liquid measuring

See attached pic for my solution to the measuring problem.

In front is some sort of medicine doser available at your local drug store (got mine at Rite-Aid) -- measures up to 10 ml. In the back are 2 bottles.

The one on the left (my 4dKH water for the drop checker) I got from Rite-Aid -- it has about a 1/8" hole for dispensing which is about as big of a hole as I would go with.

But, the best of all is the white bottle on the right (my Prime). You can buy some cheap plain saline solution (for contacts) at your drug store and pop the lid off with a screw driver and fill it up after rinsing. Be careful removing the lid as it is not made to be removed and you could damage it. These bottles have a very small hole. You can squirt a small stream and stop dispensing at 5 ml or any measurement with ease -- you can even do drops very easily. The saline bottle has saved me tons of time (and stress).