I use rain water and 5 gallon buckets... I mix about 4 gallons on nute day and place the ladies over another 5 gallon bucket with a milk create inverted over it... I then water thoroughly,,, I usually end up with a gallon or so of runoff in the bucket below... I let the girls go till the leaves are drooping and repeat the process about every 3/4 days in summer and 4/5 days in the winter...

I ph the water to 6.0/6.3 and then add the FF nutes and molasses to it,,, I then check the runoff water PH it's usually a little sweet so I just leave the FF ocean alone...