<span class="link_user">@Wildotter</span> , <span class="link_user">@indoorontario</span> , i was randomly doin research and found the answer to the soil ph...aluminum sulfate.... 1/2 cup will lower a 5gal pot by 1.0ph...just for future reference...would start with 1/4 and work up to 1/2 as not to lower to far...but yes, the soil ph did lower to good zone with just one water and dry of the soil.
<span class="link_user">@Wildotter</span>, thx for advice...what is your grow space and light like to get 5oz a plant...and ur talkin autoflowers or regular?