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  1. OllieNZ

    Does this look safe ?

    Well you can't accidentally open it to full by bumping it or knocking it over but by the same token you can't instantly shut it off either. As for quality all cylinders should conform to the relevant standards regardless of the end use. Saying that I'd be more inclined to trust equipment...
  2. OllieNZ

    citric acid and baking soda diy co2

    I'd look into ei dosing as you're effectively running a high tech tank and I doubt the liquid fert you're using contains npk
  3. OllieNZ

    citric acid and baking soda diy co2

    I think there isn't much you won't grow with it. The only downside is you need to dose it every day. How much light and what ferts are you dosing.
  4. OllieNZ

    citric acid and baking soda diy co2

    Why not look into easy carbo?
  5. OllieNZ

    Finding s leak??

    A good dollop of washing up liquid in a cup of water makes a good leak detector.
  6. OllieNZ

    ph readings, dropchecker always green and aquasoil... any relationship?

    The drop checker is isolated from the tank water by an air gap.
  7. OllieNZ

    am i wasting my time ?

    Trying remember the thread but if recall correctly co2 lowers the light compensation point of plants so you can actually use less light.....
  8. OllieNZ

    Fire Extinguisher Co2 - Illegal?

    I don't see the issue myself. They contain no more pressure than a pub cylinder or welding bottle and considerably less than the nitrogen bottles we have at work (200 bar) and once the tap on a bottle is open its no different to the handle being locked open. As long as you leave the pin in the...
  9. OllieNZ

    Stainless Steel Diffuser Rusts

    This may be the issue as not all stainless steels are supremely corrosion resistant. The nut may already be martensitic stainless which is easier to machine but not as corrosion resistant as austenitic(300 series) stainless. Just had another look at the PDF and it looks like the pipe may be...
  10. OllieNZ

    Stainless Steel Diffuser Rusts

    It looks like the nut has rusted rather than the diffuser itself, I'd clean it up and replace the nut with a marine grade (316) s/s one and try again.
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