I should have been cleaning it before.Iv been ph ing my nutes ad water to 6.0.There not using up the water very fast.4 weeks into veg.My new soil tester says its 7.0. Im using pro mix and happy frog.I need 6.0. Can I just lower the next feeding to like 5.0? Will this get my soil close to 6.0 Using Technaflora plant food,for the first time.Instead of FF