Really? Where in auckland is it
May i suggest you add your location via the user control panel in the top right corner. I figured out where you live from your welcome post 8)
For some reason i thought head height was how much it could travel upwards. My bad! Yeah i lowered it even more. P44 said it was gravity powered or something and i had been ruining it by running besides the tank
I don't like my EHIEM 2213. Then again, the previous owner had been running it besides the tank without a decent head height. Replaced the hoses to give it a decent head height(the ones he had were very short) and its just as useless.
Urine has a pH of six. A pH of six is pretty livable for a lot of fish. But doesn't mean you should put them in urine.
You need to test the ammonia, nitrate and nitrite.