QUOTE(bluecoat @ Apr 6 2014, 12:14 AM)
I am also having soil in 5-6cm thick . when you mention soil buffer is means how thick the soil , is it ? or it is some thing put into substrate ? i think my tab water same with you 7.6.
The problem is if i change water every week , i add the tab water to the tank .. it will from ph 7 to 7.6.
Myy soil just use only 2 month . I thinking is my soil brand not good cause this problem ?
just wonder if you add tab water to your tank .. eventually it will become 6.4 ?
Can i put snail into the crs tank ? if yes, Any snail can recommend ?
what soil you using ?
snail , ppl put nerite , ramshorn snail with shrimps.
Yes , i change water 10% every week, PH never change from 6.4.
soil buffer not refer to soil thickness , it refer soil as a medium that can hold and lower/up the ph. for exp. acidic soil like ADA amazonia/Benibachi shrimp soil will lower PH , coral sand will increase/up PH.