well i thought i ran out along time ago but there were 2 left
If you thought you ran out a long time ago, then you have NOT been monitoring your water parameters as you stated. You would have no way to know what is a 'normal' pH for your water, or if you are doing enough water changes in the overstocked tanks by monitoring the ammonia, nitrite and nitrate.
I'm not at home right now, but I know the name brand of the foods I feed, the dechloriniator I use and the test kits I use, and what I test for. I also know the name brand and what fertilizers I use and what amounts I put in each tank (8). How do I know all of this? Because I USE THEM EVERYDAY, not just after there is a problem.
Your gouramis are no longer listed in your signature. Did something happen to them too?