QUOTE(william1120 @ Nov 22 2013, 10:35 AM)
filteration: Hang on back filter 2biji (forget how many litre/hr, but its big)
problem is: some said need to put the powder before apply the soil. some say no need. then some say can use normal sand, some say use gravel, and some say use soil for shrimps. so blur now.
and as the question wht shrimps to keep, any recommendation with a room temperature about 27~!
Substrate choice is just what you wanna do with the tank. If you're not planting any stem plants, then don't need nutrient rich soil like Amazonia etc.
Main purpose for those shrimp specific substrate is that they buffer your water ph to a specific level for between 1 to 2 years.
If you don't need that, then sand would do as well but have to make sure that its inert and doesn't release stuffs that affects water quality.
And the de facto choice of shrimps for beginners are cherry/sakura/fire red shrimps as they're the most hardy.