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  1. Justin Freidman

    Mixing well water with RO water instead of cal-mag?

    LOL. No worries. I think I might try 25% well water and cross my fingers and hope it's OK. Obviously I'll be checking the total EC of the complete mixutre when I've added nutes - so hope it's ok!
  2. Justin Freidman

    Mixing well water with RO water instead of cal-mag?

    I maybe able to order inside the country. Will check on those - thank you.
  3. Justin Freidman

    Mixing well water with RO water instead of cal-mag?

    Yes, EC of well water is 0.5. Unfortunately we're not able to do a water analysis on it here. The plants we water with it grow very well outside! :)
  4. Justin Freidman

    2000L Reservoir DTW or 800L Recirculating System

    Thanks guys, Recirculating is it - I guess the other bonus to this system is I can keep an eye on the pH and EC of the reservoir to give me feedback on what's going on. DTW would be a pain, I'd have to catch run-off to check it each time.
  5. Justin Freidman

    Mixing well water with RO water instead of cal-mag?

    Hey Guys, I live in a country where it's hard to order things in. Before I had been ordering cal-mag but recently our local customs grabbed each shipment claiming some bullshit that I must have an agricultural license to import. At my grow room I have a deep well. When I did my first grow I...
  6. Justin Freidman

    Manifold/Tube Size for Top Feed System?

    Hey Guys, I'm building a top feed system for 6" grodan blocks. I have the floraflex tops to use for top feeding. Can anyone recommend what tube size to use and the best way to make this? i.e. Can I buy a ready made manifold that has, say 8 outlets for the tubes? Or is it easier to make one...
  7. Justin Freidman

    2000L Reservoir DTW or 800L Recirculating System

    LOL. Thanks for the helpful feedback.
  8. Justin Freidman

    2000L Reservoir DTW or 800L Recirculating System

    Hi Guys, I'm setting up a new system. It's a rockwool top feed system on a large table. I'll be using double stacked 6" grodan cubes with a floraflex top feed system. I'm trying to work out the best way to feed them. I can fit an 800L tank underneath the table and then recirculate the...
  9. Justin Freidman

    New grow hydroponic options for hot climate...

    Hopefully my cheapo chinese chillers have this built in. :)
  10. Justin Freidman

    New grow hydroponic options for hot climate...

    Thanks man. Normally here it's brown-outs (under voltage) that kills the compressor. We use safety cut switches, so if the voltage falls under 200V then it kills the power. I'll have to check if the safety cut has a delay built in when re-supplying power to stop what you say happening.
  11. Justin Freidman

    New grow hydroponic options for hot climate...

    No idea, I bought the biggest ones I could at the time. :) In the previous setup I had I was chilling 1000L of water. I have a 500L reservoir for the new system.
  12. Justin Freidman

    New grow hydroponic options for hot climate...

    We have a 35KVA diesel generator on site. It's not instant switch over, takes about 5 seconds to kick in.
  13. Justin Freidman

    New grow hydroponic options for hot climate...

    Will be monitoring it 24/7 via cctv / bluelab guardian, etc. However, sometimes I work away for a week at a time so looking to build a system that is as falilproof as possible.
  14. Justin Freidman

    New grow hydroponic options for hot climate...

    I'll check tonight when I'm home on the make and HP. The issue here is the electric is very bad, we often get surges and brownouts, things always blow up here. I run my expensive led lights on two huge 3000V APS UP's to protect them, however the chillers use too much power to run via a UPS...
  15. Justin Freidman

    New grow hydroponic options for hot climate...

    It's too hot here my friend for fun.... 97F at 6am is no joke to wake up to. :( I just thought running them in parallel is a good way to have a backup without having to mess around unplugging pipes, etc.?
  16. Justin Freidman

    New grow hydroponic options for hot climate...

    Why not? I have two units, it makes sense to me - if one fails, then the other one will keep working.
  17. Justin Freidman

    New grow hydroponic options for hot climate...

    I have two chillers here I will run in parallel. :)
  18. Justin Freidman

    New grow hydroponic options for hot climate...

    Cool! I'd still need to chill the water for optimum 02 uptake right? and to also avoid root rot?
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