Barney's farm - Sweet tooth auto - DWC

This week she really become thirsty and hungry, she is drinking 5 litres a day and ppm is dropping. Topping up the resorvoir daily with higher ppm to try counter the ppm drop. I've turned up all the lights to max, so total draw from the wall is 312W, factoring in driver loss, the lights must be push out just under 300W total.