3rd grow (Dialling in the basics)

Waited a few weeks before documenting this grow because I was so disappointed with my last failure. Did my usual germination method with these three seeds of SoMango XL from Royal Queen Seeds. 1. Placed the seeds into lukewarm water for 18-24 hrs until they drop to the bottom. 2. Into some damp kitchen paper and placed into individual plastic sandwich bags to hold the moisture. 3. Placed on top of a heater keeping 25c for 24hrs. 4. Once tap root is about 0.5-0.75cm I planted them in damp rapid rooters on a tray with a lid fully closed. 5. Kept them on the heater for another 24hrs and then into the tent. 6. Within about 3-5 days the tap root will have hit the base of the rapid rooter so transplanted into solo cups with 67:33 (coco:perlite). 7. Watered with 200ml at 150ppm for another few days. 8. Upped to 200 and 250ppm once they start growing. Looking at runoff to make sure it isnt higher than the input ppms. * I had one runt that I thought wouldnt make it early on. It struggled to root after germination and couldn't support itself without a stick. The tap root did a loop at the start which slowed it down. Bounced back and is going leaf for leaf with the other too now.