Salnity is 1.015.,PH of 7.8 to 9 in rest not sure exactly. The tank is 30 gal, two GSPs only.They are quite small guys,some 5 sm not more. I feed them with shrimps, snails, cranks but too rarely, twice w week with live small fish. I change 10% of the water weekly. Tank is fully cycled and it's 1 yea...