Medic, I have read reports that they can work sometimes but Billy summed it up well. Just get Tropfs in my opinion. And set them up 2 weeks in advance. You will come back to huge thriving plants. That will be a lot of reservoir size so make sure it won't be a disaster if you get a runaway. I have a few of the XL carrots I plan to trial in veg at some point but I don't have high expectations. I just suck at watering my plants on time so hopefully they will keep things ticking over and reduce watering frequency.
Well it's been just over 2 weeks I think since I inserted my carrots. Verdict: frikkin incredible. No runaways, no nothing. The effort of growing (it's so hard lol) has gone from a 100 to maybe 25 or so.
Since my last post, I noticed a serious problem forming and signs of nutrient deficiency even though they were being fed well. Then a branch just wilted and died out of nowhere. Also had this problem last run but thankfully I didn't lose a critical amount. This time though, it started immediately entering flower so I researched it more. Verdict: Pythium or something close to it.
So I ordered up a jumbo bottle of PythOff (apparently just chloramine) and now I have a dead res! It's awesome. Seeing a huge improvement after a few days on chloromine. They're drinking twice as much which is a great sign to see. I should be free of slime issues in the res too. Haven't cleaned my res once yet, just topoffs, even before the chloramine. It's crystal clear.
So a big thank you to all the growers who've shared info. I'm nearly finished the icmag thread too lol.
Just a heads up for fellow newbies, do NOT waste your money on the dial protectors. They're so hard to get off that I pulled a firmly lodged carrot out.
Also, I got this tip from the ic thread, have one arriving any day now but its just a cheap device that will trigger an alarm if even 1 drop of water is present. If you search ebay or whatever for "water leak alarm" or similar you will see them. I'll let you know what I think when it arrives.
Nutes:
Maxigro and Maxibloom, ec 1.1 to 1.2, ph 5.9 or so. It's about 6.2ph by the time I refill.
PythOff at 0.25ml/litre
Silica at label dosage
DripClean at a little over 0.1ml/litre