I will definitely read though that Manuel. I think I got it down now but I’m always interested in knowing more. Next year I want to get into ph and acid levels and see where that takes me. I have one more question, how do I cold stabilize a 150l tank? If I try and put it into the fridge it might break the floor and I don’t feel like spending hundreds on a fridge. Do they have some kind of a cooling blanket to wrap the tank?