MindSoup Posted June 14 Share Posted June 14 (edited) I don't think that really matters TBH, other guides say you can use tap and thats what I used, that's just a random video grab. Edited June 14 by MindSoup Link to comment Share on other sites More sharing options...
Gsyrup Posted June 15 Share Posted June 15 On 14/06/2024 at 10:16, latigid aikon said: I think that was @GSZZ and it made a lot of sense to me. Aye that was me - VPD is the result of transpiration, not the driving force of it, light is the only driving force of transpiration. VPD is misinterpreted as some as a paint-by-numbers guide for environmental conditions and rate of transpiration when in fact VPD is a tool to measure water lost through transpiration which is very handy when balancing environment and plants. 2 Link to comment Share on other sites More sharing options...
latigid aikon Posted June 15 Share Posted June 15 11 minutes ago, GSZZ said: Aye that was me You're the only person on here whose posts I read in your actual voice (since hearing you on a podcast) 8 minutes ago, GSZZ said: VPD is misinterpreted as some as a paint-by-numbers guide for environmental conditions It's kind of understandable when we've been presented with things like tables showing "Recommended Leaf VPD" 2 Link to comment Share on other sites More sharing options...
screrg Posted June 19 Author Share Posted June 19 I always thought dialling in VPD was the gold standard of growing and something I'd been working towards. Lookng at the chart having it at 29C/30C in late flower and humidity at 65% goes against everything I've read before. I've been getting class results with 25-27C and 60-65% in veg and 28-30C and 50% in flower (LEDs in mud). I've just set the controller up and have it as above and am in mid/late veg (net about to go on). Is there anyone that is a big believer in keeping to VPD as in the chart? Link to comment Share on other sites More sharing options...
screrg Posted June 19 Author Share Posted June 19 On 13/06/2024 at 08:10, Larry Badgeley said: @screrg Setting up the controller is very easy and a fantastic bit of kit. First time I've used it this grow and it's been a real help in getting the environment dialled in. Aye, I've used it before but with just the extract fan controlling the temps and love it. Now I've got the humidifier set up top it's a thing of beauty to see the display tinkering with the speeds and keeping things consistently healthy for the girls. Like a kid at Xmas with the best new toy just there Link to comment Share on other sites More sharing options...
screrg Posted June 19 Author Share Posted June 19 Does anyone use distilled water in their humidifiers? Had a look at how to make it and looked a right fuck on for how much you would need. I'm thinking just use normal tap water and give it a good clean after each grow? My tap water sits in the middle of hard and soft water but unsure if that makes any difference to the buikd up in the humidifier. Link to comment Share on other sites More sharing options...
Larry Badgeley Posted June 19 Share Posted June 19 @screrg Tap water is fine. Clean the humidifier every 3 days. It's surprising how dirty it gets. Link to comment Share on other sites More sharing options...
Military Grade Posted June 19 Share Posted June 19 8 hours ago, screrg said: Does anyone use distilled water in their humidifiers? Had a look at how to make it and looked a right fuck on for how much you would need. I'm thinking just use normal tap water and give it a good clean after each grow? My tap water sits in the middle of hard and soft water but unsure if that makes any difference to the buikd up in the humidifier. Can leave a powery residue all over the place if you don't use RO water mate Link to comment Share on other sites More sharing options...
Mr mcgregor Posted July 27 Share Posted July 27 On 19/06/2024 at 05:59, screrg said: Does anyone use distilled water in their humidifiers? Had a look at how to make it and looked a right fuck on for how much you would need. I'm thinking just use normal tap water and give it a good clean after each grow? My tap water sits in the middle of hard and soft water but unsure if that makes any difference to the buikd up in the humidifier. The inexpensive humidifiers I have state in the instructions to only use tap water Link to comment Share on other sites More sharing options...
Shumroom Posted July 27 Share Posted July 27 But doesn't that just mean, not to use essential oils and stuff like that?? Atb Link to comment Share on other sites More sharing options...
Gsyrup Posted July 27 Share Posted July 27 22 minutes ago, Shumroom said: But doesn't that just mean, not to use essential oils and stuff like that?? Atb No - RO water can be as destructive to a humidifier as hard water can. RO is a a very strong solvent, it causes things it comes into contact with to perish. If you drink RO water, it'll kill you. 1 Link to comment Share on other sites More sharing options...
The Green Manalishi Posted July 27 Share Posted July 27 The cheapest and easiest way to check that your plants are transpiring properly, gently rub her leafs, they should feel cool, soft and velvety…..like a horses nose 1 Link to comment Share on other sites More sharing options...
Shumroom Posted July 27 Share Posted July 27 I didn’t know that about RO water @Gsyrup This is probably why good RO systems have a re-salting stage? Atb 1 Link to comment Share on other sites More sharing options...
Military Grade Posted July 27 Share Posted July 27 According to the Internet RO water is safe to drink but not recommended for long term drinking due to the lack of minerals. Link to comment Share on other sites More sharing options...
The Green Manalishi Posted July 27 Share Posted July 27 So you can use RO water in a humidifier , you just have to bring the ec up to 0.4 with calmag before you start 3 Link to comment Share on other sites More sharing options...
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