oyster shell

[Rick]

Thanks for the info... TDS reading for the tap water is about 85 ppm TDS. I was planning on cutting my 15-5-15 fert in half and add Calcium Nitrate and MgSO4 as you mentioned in a post somewhere. I am cutting back on ferts now any way. What seaweed extract do you reccommend? I have tried a couple types...

I'm using a product from Seaplex that I got from the Worm's Way people.

I can't vouch anything sacred for this particular product. I'm sure there are others out there. I think the main thing to look for is cold processed.

 

[Rick]

TDS reading for the tap water is about 85 ppm TDS.

Sounds about right for the conductivity value listed in your table.