So I was doing an ammonia top-up for the fishless cycle and added a capful of the 10% ACE Hardware Ammomia. I waited 5 minutes then tested it, and it registered as between 0.25 and 0.50ppm. So I added another 3 capfuls in an attempt to bring the levels up to about 5ppm. But I forgot that I had to wait 5 minutes for the test to develop... and now it's registering at the max level! And that was BEFORE I put in the three extra capfuls!!
I now have a tank FULL of ammonia - should I do a water change?!