So I've been having lots of problems with my plants which what looked like was a nitrogen and calcium deficiency (yellow and browning of lower leaves strarting at tips working toward the inner leaf and progressing upward of the plant), However despite the actions I have taken to fix the N and Ca deficienies nothing has worked, So I decided to test my PH...Came out below 6.0, Not sure how much below, I have a dirtcheap PH measurer from walmart, and I do have PH Up and Ph Down. So I started adding PH UP to my water which is naturally around 7.0 to try and get my PH up, I flushed my 6inch pots (Not sure what size per say liquid volume) with around 1.5 to 2gals a piece then took a another test, STILL below 6.0, showed very little signs of improvement. What should I do ? I didn't even get the PH down so I didn't know if I should have added half or quarter strength fert to my last gallon I flushed with. Both of my plants are looking pretty grim and I really want to get this PH problem out of the way. This is my first grow so I've made some mistakes but I want to pull this off. Any help would be great. PS I've been using the Miracle Gro Organic Soil and Peters 24 8 16 Fert. I have heard through the grapevine that this MG Organic soil has been known to cause very low PH problems, However I didn't hear this til it was too late and my plants had already been transplanted into this soil.