what are u using for ur plants in the beginning? rockwool, rapid rooters? all natural maybe. do ur nutes say on the bottle may cause temporary rise in ph? ive used nutes from cutting edge before where i had that problem. one addative would temp raise the ph and i would correct it even tho the bottle told me not to like a retard. but thats becuz i didnt read up on them vary well when i first started growing. it would rise for a couple of days then lower itself back down naturally as the plants drank the nutes.