Soil / test tank
I am going to start a low tech Walstad tank with dimensions 35,5x35,5x18 inches.
Beacuse i am going to use soil i decided to test the soil setup in a smaller tank first, a 12x12x14 inches small cube.
The tank has been running since 31-january with 1 inch of soil and 1 inch of sand 0,2-1,0 mm grain. There is 10 Mosquito rasboras and 5 cherry shrimps in the tank and a lot of plants.
I did some water tests today:
It looks like the soil is ok to use and the plants is taking care of the Ammonium but the GH seems to be a little low.
When starting the larger tank should i mix in something in the soil to rase the GH?