Yes it is probably the soil in this tank that is the problem, i do have another dirt tank with soil that do not containing any ferelizer and this tank is ok except for some tanning of the water.
I started theese two dirt tanks to see if i wanted to use this (Walstad) methode in a bigger setup beacuse i want to run a low tech tank. I am now leaning towards using Tom Barr's low tech methode instead, it seems to me that his methode might give mee less problems and more control over the tank. I think i am going to use cat litter as substrate instead of soil, we have a cat litter product here in Norway that is suiteble for aquarium use. It has red clay color, but that might be ok with green plants.
I do think i will keep the little dirt tank with cow manure beacuse the plants grows like mad, of course as a only plants tank.
Last edited by Jnad; 03-09-2013 at 09:22 AM.
Reason: Adding text