Hey guys this is my first indoor grow.
I started off using a comercial brand of universal potting soil and I added some organic horse fertilizer.
I put them under a 250w HPS agrolite gro and flo lamp.
Everything was doing great so far.
Things are looking better this week. it had a slowish start. a good flush with pH 6.3 could help in short term. Back off nutrients depending on soil make up maybe till spots improve. ppm of water feed compared to run off can indicate nutrient concentrations and take up. All the best