My 3 week old plants show minor signs of mag deficiency and slow growth, I figured that it is due to PH lockout. They originally got watered with poland spring ( aboutat 6.6 ph ) and then tap water which could have been even lower (added ph down and had a broken ph tester)... So today, over week later, I decided to give them water with higher ph to offset the low ph, I gave them a watering with 7.5ph. However, the run off was yellow and it tested at 5.5 ph. That just seems insane... i used a test strip and electronic ph tester and all seem under 6 for run off. But this is my 4th grow and honestly I always remember run off water to look yellow. Usually I don't test run off and just feed 6.8 ph to ffof soil, but this time my soil mix is: 50% ffof 30% roots organic 10% perlite 10% light warrior a couple questions: 1. does your run off look yellow? 2. should i flush them with 7.5 ph or higher until the run off hits 6.8? 3. can the light warrior be lowering my ph so much that i need to always feed something like 8ph to get 6.8ph run off? any other suggestions?