You need to look into a water filter or R/O filter. 388 is extreme. Do you know what your drinking ?

I like the setup, some day I'll get one.

To find your problem do a test. put one seedling or plant by itself and give it PH'ed tap water. Wait to see if it burns up.

My tap runs about 260 give or take. It takes this water 3 days to turn all the large leaves yellow on a 3 foot bush.

Some places care about what they drink.
Well water at even high ppm's can be great stuff. it's just a crap shoot.

Round here they put wierd stuff in the water to keep the Marines from killing the whole town when they come back and decompress.
LOC NAR on probation Reviewed by LOC NAR on probation on . Brown leaves on seedlings. HELP Guys: Need some help with what's going on with my 2 week old seedlings. Just in a couple of days the leaves started getting brown. Up to just few days ago had been using distilled water now have 5.5 PH tap water going and they are in rapid rooter cubes under florescent lights Ideas of what is going on and how to fix?? :( Help appreciated :) Rating: 5