hey im new to this and i mixed my newts in a 40litre ebb and flow res and the ec was 1.3 when i was finished with a ph of 5.8 but 24 hours later the ec was 2.2 when i checked so ive added loads of plain tap water which as took it to 1.6 now with a ph of 5.9. can some one help or advice why this...