@Grandad_Mac, hi mate sorry haven't been on in a few weeks. Where I am the water is pretty good, low PPM but I do leave it out for 24 hours to declorinate just in case. I'm growing in an attic so the yellowing at the bottom has been from heat stress although I havent suffered that in a couple of weeks now. Bottled water could be a shout. I used it in a previous grown because its ph at source was 6.8 so it saved me using ph down. I saw your grow but and things seem to be going OK. Hope it continues for you.
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