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  1. H

    First Post - Cal deficiency or root rot or other issue

    Time for another update. Checked res again on Sunday. Ph and EC had remained stable for 3 days, water level dropped reasonably. Topped up h202. Have this evening changed out res again. 1.2ec including a small amount of calmag again and the h2o2 treatment. Plants still looking a bit stressed...
  2. H

    First Post - Cal deficiency or root rot or other issue

    Also, how do you "like" someone's post?
  3. H

    First Post - Cal deficiency or root rot or other issue

    So, daily update as I'm now quite enjoying this forum. And maybe the thread could be helpful to another noob like me one day. Second flush was left to run on the normal flood and drain cycle last night. This evening the res was reading 0.5 EC. I've dumped that water, refilled with plain tap...
  4. H

    First Post - Cal deficiency or root rot or other issue

    Nice one. Just completed 1 hour flush cycle. Run off was 0.9 so fair bit of salts removed I guess. Now draining that to waste before adding fresh water for a night of flushes. Will then get to work with a fresh res and h2o2 tomorrow as its ordered already. I'll also look at those alternatives...
  5. H

    First Post - Cal deficiency or root rot or other issue

    My tap water is chlorinated. But I think its a very low level and possibly off gases before it can make a difference. At the risk of answering my own question. Would this discount me using the beneficial bacteria? Or would i just need to run an airstone through it a while before adding?
  6. H

    First Post - Cal deficiency or root rot or other issue

    Thanks for the reply ThisBud. The root rot does seem likely from what I've read too. And you're right, I don't have anything combating the bad bacteria. I've got the flush going now, because as Myke pointed out I dont think I've been doing it often enough anyway. I ordered a H2O2 product the...
  7. H

    First Post - Cal deficiency or root rot or other issue

    Its a recirculating flood and drain, in hydroton pebbles. If I leave the pump on the water will be circulating with the table filled to the drain level. So not stagnant, but definitely submerged. Maybe I'll do like an hour continuous then the usual 5 floods for the day. Will mean I get to bed at...
  8. H

    First Post - Cal deficiency or root rot or other issue

    On it, cheers. I'll let you know how things go
  9. H

    First Post - Cal deficiency or root rot or other issue

    So can I leave the roots fully submerged for 3 hours?
  10. H

    First Post - Cal deficiency or root rot or other issue

    I haven't been flushing that much. You might have identified the problem. I normally do one flood cycle of plain water every 2-3 weeks at most. Thinking out loud, would the lack of flushing have allowed too much salt build up in the medium, especially given repeated rapid evaporation, which may...
  11. H

    First Post - Cal deficiency or root rot or other issue

    Second time I've grown total. Grew skunk #1 last time and saw a very similar, albeit smaller, issue but just during the last two weeks after feed was tapered off. This, as well as the way the discolouration started as small spots in the middle of leaves not at the edges, led me to believe it...
  12. H

    First Post - Cal deficiency or root rot or other issue

    Thanks for the info Myke. The pro bloom additive is actually an addition since I saw the problems, added as TA claim it aids calcium absorption. I will try leaving it out and dropping the EC slightly. Up to this point I've pretty gradually increased the EC, most of the time it drops slowly /...
  13. H

    First Post - Cal deficiency or root rot or other issue

    A bit more info in case it helps with any advice. Grow room temps are fairly stable around 25C lights on, 18C lights off. Relative humidity is held at 50%. The issues seem to be mostly showing on the indica dominant phenos that look further along in their development. The stretchy sativa leaning...
  14. H

    First Post - Cal deficiency or root rot or other issue

    Hi everyone. Long time lurker but First time poster here, inevitable asking for help. Will likely be a rather long post. So, on my second grow with 6 G13 labs feminised pineapple express from seed. Flowering under 1000w HPS, in a 1.2x1.2m flood and drain table using hydrocorn pebbles, started...
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