Hey all,
after the sad deaths of all of my tanganyikans I have decided to see what was causing the problem, because to be fully honest I don't believe you guys...
I was pulling the lid off of the tank and realised that the silicone holding the lid to the tank was white to grey, but the silicone holding the tank together was black... Homemade I thought and from the job that was done with the silicone it sure looked like it!
The wrong silicone leeks chemicals into the water when exposed to moisture, these chemicals slowly kill the fish with no visible reasons and is completely undetectable seems like the problem I had!
So I am removing all grey/white silicone and will be re-sealing the top to the tank, I will also be sterilising the tank with 1 part bleach and 9 parts water and washing, washing and washing... with some materials being able to absorb chemicals that made me think the sand might have the chemicals in it, so we are scrapping it, just incase. But filters absorb nitrates and other nasties so why wouldn't it absorb the bad chemicals what if it were to release the chemicals back in when I start them up?
So that comes to the question on how will I remove those chemicals or would bionood in the filter have absorbed the chemicals? Scrap the bionood or clean it? How?
It has bionood that's the main question