fyi.....can't substitute stuff like that in hydro. Instead of lime you need to get a good ph up/down for hydro apps. In a BIG pinch you can use distilled white vinegar to lower ph but I personally have never heard of using lime in hydro apps. You need to find a good nute program and follow it .......no improvisations. In my humble opinion that's the biggest problem I see......everyone likes to add/change/substitute etc..... The newbies (and not so noobies) that follow direction are the ones who will get the best grow.

Good luck with your plants.