One on the back left with those marks on the leafs, its dropping a little dk if that’s just coz I’m going to feed them and they’re hungry or what, but the marks haven’t seemed to get any worse since I started giving the plant some calmag.
These two looking a little funny
Checked the runoff as well went in as 1.1 out as 1.0
Boring stuff:
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Thanks mate quite technical stuff but yeah true anything to get you to buy more haha I feel like a lot of the guides are quite high.Boring stuff:
Plants can be trained to take a pretty high EC. In order for the plant to get water from outside its roots (the coco) to inside its roots, there needs to a higher concentration of dissolved solids inside the water of the root cells than outside the roots because water molecules flow from lower dissolved solids to higher dissolved solids (osmosis) to reach equilibrium in dissolved solids on both sides.
How a plant manages this is it produces sugars to increase the dissolved solids inside the roots so that water can flow from the high EC water into the roots. If the EC outside the roots gets too high too quickly and it can't manufacture enough sugars quickly enough, then water will actually get sucked out of the roots because water travels from lower dissolved solids to higher dissolved solids, even if it's not in the direction we want.
Relevant stuff:
All of that is to say that if one gradually keeps increasing the EC, the plant will continue to manufacture more and more sugars to process the high EC feed.
This is why some people can feed as high as 3.0 EC and why some cannabis nute lines will show pretty high EC schedules in their charts - that, and because it sells more nutes
However, when it's manufacturing more and more sugars to ensure it can get water from high EC feed, it's expending energy on doing that. It only has so much energy per day and we want as much of that energy as it can to be put toward growth. If the EC is kept at the EC that the plant has come to expect, then it can focus its energy toward growth.
The nice thing about checking your runoff EC is it will tell you. If you bump it up to 1.7 and the runoff starts coming out at 2.2, then you're getting into a danger zone. The plant will likely not exhibit any problems visually yet, so if one isn't monitoring runoff EC, they might be inclined to keep bumping it up rather than taking remedial action and then be surprised when the plant goes to shit.
Yeah thanks mate definitely grew quite a bit since then I must have stunted the growth a little at first coz this is my first time using coco and I was just giving them water for the first few days, didn’t realise I was to add nutes from seedling haha.
Didn’t realise how breathable it was as well water flows through quite easy, I was worried about water logging it at first haha
Could maybe be to much dry back maybe I need to feed them slightly more feeding them about 100-150mls a day atm getting about 20% runoff, but doesn’t seem like that the coco is still nice and damp / wet.
I’m not 100% about the ppfd are any of those apps that use the phone camera to tell you ppfd of the lights any good?
Aye mate I have a little oil filled radiator to heat it up but not give them to much light stress. but yeah mate I downloaded one of those apps and it’s saying it’s 150 ppfd but just dk how right it is coz I have 2 leds and it was saying the other was like 500, keeps giving me different readings I don’t trust it it’s called photone.
Shane from Migro tested the Photone app against his $600 quantum sensor, and it was very close. If you have a recent iPhone/iPad, it's certainly accurate enough for growers' needs.
Cheers mate I have an iPhone10 so think it should be ok? When I use it, it keeps giving me different readings and saying I need a diffuser should I look into getting one?
Right now im using a small LED I had from a past grow a 250w one but thinking of putting the new ones I got that fill the tent on their 720w but can be dimmed to 250,400,600,720 was just wondering how far you think I should put them from the plants when dimmed to 250w 20-30 inches?
