Dr.Nick Riviera
Well-Known Member
growstones are recycled glass that looks like perlite https://www.sunlightsupply.com/shop/bycategory/growing-media/growstone-gs-2-mix-this-soil-aerator.It just isn't working for me. The soil is testing at 6.8 ph. My newest sprouts developing pale centers within 4 -5 days of growth. I'm fine flushing the slow release lime and replacing with calcium nitrate based cal mags or even CaliMagic, which is a blend of calcium carbonate and calcium nitrate. Maybe it was just a bad batch, or this general purpose mix that is stocked through the box stores.
I'm going with the following advice -
Light Warrior it is.
My town water comes from a lake, and is treated with Soda Ash. It raises the PH so when it goes through our distribution system, it is less corrosive and leaches less heavy metals. I get 8.5 to 9.0 out of the tap, and RO is actually more efficient at a higher ph, but will not change the ph unless the ph level is caused by an alkaline dissolved solid. My RO water comes out at the same PH, too high. If I PH the RO water and check it in a day or two, it is still spot on, so no risk of drift or anything like that.
I thought RO would be close to neutral and was very puzzled by it, until I did the research.
That's interesting, you use hydroton instead of added perlite? How much do you add? How much earthwork castings do you add, and what brand?
and i use these EWC http://www.fertilizeronline.com/wormcast.php
the growstones don't float to top like perlite and the EWC are some of the best you can buy.
1=bale pro-mix, 1=40lb ewc,1=bag stones,mix well