m0useanswered grow question a month ago Most municipalities use a form of chlorine that is stable and will no boil/evaporate out. called Chloramines, you can denature them by adding in ascorbic acid aka Vit C and then it can be off gassed but their is so little in the water it does not affect any of my grows and I only use tap water.
Looks up the feeding guide for your biotabs. a lot of them plants in the pic looked burned a bit and the weird twisted growth is a indication the root zone is not getting enough oxygen. Be it from over watering or compacting medium with not enough aeration.
https://biotabs.nl/download/organic-cultivation-manual-english.pdf
Good Luck!