1 day to set up a cherry tank

Once again, the sakura/cherry shrimps' population has increased rapidly. Decided to set up a new 1ft habitat for them. This is the 4th time that I am setting up a tank for them. Bought a drift wood, and 1kg pack of Gex soil, and a pack of white gravel. First thing I did was to take a large piece of sponge filter media from my goldfish tank. Squeezed all the dirty mulm onto the tank, retained the sponge for the hang-on filter for the 1ft tank. I think the sponge filter media from my goldfish tank is amazing. 1 day of goldfish shit is probably equivalent to 2 months of all my shrimps' excrement. So you can imagine the amount of beneficial bacteria, as well as all the micro-organism living in the sponge!!! Placed the gravel, positioned some rocks and driftwood, and planted some crypts and chain swords. Topped up the tank with de-chlorinated tap water, and the tank was ready for the shrimps. The total effort probably took about 1 hour, and the tank was commissioned in a day. The shrimps are now eating, molting and breeding 2 weeks later, without any casualty.
Some measurements:
Ammonia - 0
Nitrite - 0
Nitrate - 0
PH - 7.5
Temp - 29 degrees