Ok, Got a pic for anyone to troubleshoot. This is 3 weeks old. It's growth seems to be stunted. I changed my res with fresh water and used flora series for the nutes. The mixture is followed as indicated for seedlings.
1/4 tsp per gal of all three. PPM shows around 640. Help Please

PPM 640
PH 5.0 - 5.5
Watering every 12 hours
b735170 Reviewed by b735170 on . Expert experience/advice needed 14 days from germination to current. I had a problem a couple of days ago with my nutrients being a little strong. Showed signs of burning. I immediately changed the res and diluted with half strength nutrients. Being 1 day later, they are not looking as good as I think they should. Note my setup. 10 Gal Eb and Flow PH 6.5 to 6.9 PPM 530 T5 Lighting 24 x 7 1/4 tsp per gal of FloraMicro 1/4 tsp per gal of FloraBloom 1/4 tsp per gal of FloraGrow Watering schedule is every 6 Rating: 5