Strawberry pie - Marshydro TS1000

Started week 1 and we placed these girls in a 7 liter pot, they are now growing with 1x Marshydro TS1000 but im adding another TS1000 in 2 weeks when they start flowering From the 5 plants germinated only 3 survived, strange as all other 25 plants (other strains from the same bank) germinated correctly, maybe its my fault or maybe the seeds were just weak but i never like to judge the seed bank for something which is maybe my own fault so its ok, these things can happen sometimes 😢