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  1. astonehead

    Which driver help

    cant think off my head but what driver would I use for 2 36v boards to run 75w? I’m thinking 185-1400 but not sure il get 75w with out a 2100? Any help so I don’t have to sit and work it out would be great
  2. astonehead

    R strip Samsung horticultural

    just got myself some new lights so thought I’d post and tell people about them and maybe do a diary. These are new R strips from invisible sun with Samsung lm301h and lh351h and initially they seem promising.
  3. astonehead

    Potentiometers

    just wondering how I can up he resistance in a pot? I keep buying pots and everyone of them are between 90-96k I need at least 99 if not 100+. Iv even gone and bought a Honeywell pot and that is only 96.9k. So can I ad a resister to up the rating whist still allowing it to dim to 0? Thanks
  4. astonehead

    Something to read

    just something iv read, some may have seen it. Was good till I saw it was funded by an led company, some strange results but could pick out some reasons why. https://www.karger.com/Article/FullText/489030
  5. astonehead

    Ripening indicators

    so since I switched to led over a year ago iv been confused as my plants appear to be ripening faster than ever before, I have amber trichomes popping up and a lot of hairs turning brown but only at day 40. I have been assured this cut goes 63-70 days so surely this is way to early
  6. astonehead

    Do tube heaters give off ir?

    should I be switching my tube heaters off with the lights? Probably a stupid question but worth asking
  7. astonehead

    Fusion or sunboards

    as above for a 31”x31” tent so just under a 3 x3, will be 4 on a 320-2100. I have both. Will be for mainly autos Thanks
  8. astonehead

    Grow northern ms0006

    are these any good? Trying to get the funds together to grab a used one but is it worth it? Thanks
  9. astonehead

    Shorter flowering under led

    not sure if it’s just me reading my plants wrong but does anyone else find floweringbto finish a couple of weeks early under led? Seems mine are almost done at day 46 and I think they are 60ish day strains. I use 3000k 90cri cobs at 35-50w so plenty of red
  10. astonehead

    How high?

    just after some opinions on height from canopy. Running cobs at CXB3590 at 1400Ma and 4 boards at about the same total of about 750w. Iv decided to leave the reflectors off this run as they seem to cause problems. At the moment it’s 18 inch’s from the tallest plant and about 24 from the short ones
  11. astonehead

    Hybrid builds

    thought I’d make a thread specifically to show your hybrid builds and so I can get some ideas where to go with mine. I’m talking cobs and boards on one fixture. Here’s mine, I’m always looking for ways to change it up.
  12. astonehead

    How does efficiency effect a grow?

    hiw does running leds effect the way you grow? As in, do you need to run the lights closer for the same given wattage? I have 9 cxb3590s, for the purpose of this (they are copies) I have 4 fusion board copies and 4 qb304 copies and was running Roond 600w on the whole fixture which was 360w...
  13. astonehead

    Should I get yellowing at 600w?

    as above, should I get yellowing with 600w in a 4x4 tent? Running super efficient and quite high aswell, can’t bring myself to lower the wattage lol
  14. astonehead

    Why can’t I use reflectors

    iv been trying to use reflectors on my CXB3590 3000k 90cri but even at just 30w-35w it just fry’s everything. I sprouted with 4 304 Samsung boards with 177w between the 4 and then had 6 outer cxb with 115w between each 3. But, the seedlings have fried edges and that was at 45 inch’s away in a...
  15. astonehead

    Res ph

    Trying to setup my dtw system. I have a 100l res with 70l of plain tap water but the ph is riseing by around .2-.3 per day. I’m trying to get it stable before I add nutes and start useing he system. I refrained from putting air stones and have a mj500 that runs for 5 mins 3 times a day just to...
  16. astonehead

    Room temperature with leds

    as above what does everyone keep their rooms at? I've always been around 25-26* when useing hps but now useing the cobs and boards what should it be kept at? My whole room is pretty equal just drops off temp wise a couple of degrees at the bottom of the pots. Just wondering what's gonna grow...
  17. astonehead

    Light height

    iv got 9 cxb3590 at 40w each and 4 Samsung boards at 140 between 4 how high should I be hanging my fixture? 500w at the wall. Have it at 12 inches but not sure if it's too close
  18. astonehead

    Help setting up without a par meter

    i keep tweaking my lights trying to see where my plants look stressed but seem to just not like light. I have 9 cxb3590s 3k 90cri on 3 120 1400 drivers 4 304 35k Samsung boards on a 185 1400 What power should I put through the boards and what should I put through the cobs? For flowering at the...
  19. astonehead

    Mini flowering bulb

    Bought a bulb for my bedroom lamp man it's bright for a 2700k
  20. astonehead

    How is everyone hiding their wires

    as above how is everyone hiding the wires on your diy builds?
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