Best ph kit you can get is a ph pen. Brand name is up to you but I got a Hanna auto temp compinsate and think it is junky. Takes a long time dipped in the water to get a compleate reading, but that's just my opinion. Cheap ph pens work fine but are a little less acurate than the ones the calculate temp while getting the ph. Also I think I told you in a thread a long time ago that those meters are junk and only for old ladies growing roses outside. But there was someone I forgot saying it was a must have. With a ph pen you know EXACTLy what ph water/nutes going in and you can check the run-off for the ph coming out. Search the forum for stinkyatticks soil runofftest