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Rust spots on leaves

Tjcashmoney
Tjcashmoneystarted grow question 3 years ago
Check the pics and recommend something to help a newbie out. I’ve seen it for a couple weeks. I removed all leaves with necrosis, but it came back. I don’t know for certain what it is. I think it might be a calcium deficiency. I was going to go out and get some gypsum, but I want
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Week 7
Leaves. Color - Mottling
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MrStinky
MrStinkyanswered grow question 3 years ago
Hey dude! Just looked at your diary and it says you are watering currently 2L every 24 hours - that could well be the root if your problems - at that stage I would say 2L every 2-3 days. Going back through previous weeks I would say overwatering has been ongoing. It looks like pH issue on your new thin growth and multiple deficiencies on leaves - try reducing your daily waterings to only watering when the pot is dry and very light (a damp pot feels a LOT heavier than a dry one). As you have fabric pots and organic nutes, you really do not need to water to runoff if that is your thinking - watering to runoff with organics is not necessary as you flush your good stuff out of the soil. Watering to a few drops of runoff is your friend with dry organics. Try weighing your pot every 24 hours until you lift it up and feels like it has nothing but cotton wool inside - you are looking to water when pot is dry and light but before leafs start drooping. You can properly weigh them on bathroom scales or even a luggage scale hanger with your pot handles. I will put a watering guide on here that might help but it is based on 11L fabric pots, although with dry nutrients so adjust your watering volumes based on that :)
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Papa_T
Papa_Tanswered grow question 3 years ago
Yeah what mrstinky said.
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MrStinky
MrStinkyanswered grow question 3 years ago
Get a small hand sprayer and a big one for later on. Watering in week 1 tip: Get a big plastic cup and cover the plants over like a helmet so you dont spray the leaves - I burned my first plant doing that. Do this every day until the plant no longer fits under the cup. Each watering should be dry in 24hrs and keep your humidity like 70-90% Week 1 - 100ml per day, increased 20ml per day, sprayed across the surface of the soil and 5-10ml at the bottom of the stem in a gentle trickle every day. The trickle at the base to give the plants tiny root some water straight away. The spray all across the top to soak into the top few cm of the soil to let the spreader roots rush across the top of the pot to chase the water, you have fabric bags so it makes sense to encourage lateral growth ASAP Week 2 - 250ml per day increasing 10ml per day (plant should be too big to fit under cup this week so just soray carefully) and a couple of squirts at the bottom of the stem Week 3 - 350ml per day Week 3 mid week - 1 x 1L watering of the whole pot (I am organics) - let half of it dry (weight pot before and after) and then a 250ml watering on top Week 4 - up to 500ml per day and rising - about 100ml directly at base if stem every watering now Week4 mid week - 1x 1L water / 2 days dry (almost saturated) Week 5 - 750ml per day and rising steadily Continue until they reach max water intake per 24hrs With the 1L feeds, do it slowly, in 2 x 500ml sessions about 1 hour apart to allow the top of the medium to absorb water, and then the 2nd watering for the water to flow to the lower substrate. The reason for the 1L feeds is Im on dry organics and 1L almost gives me run off, I cam just feel moisture under the pots (fabric, 11L) so I'm not watering to runoff, but helping the roots lower down in the pot chase a nice big drink. It am hoping it also allows me to build into a constant wet / dry cycle, eventually I hope the pot should synchronize and need a full watering every day(ish). I try to imagine watering the plant like spring rain showers man, and a bigger plant will definitely suck up more rainwater than a smaller plant. It helps to know the weight if your pots wet and dry for sure, put them on scales if you need to - I did / do, thats how I know how kuch my girls are drinking on a daily basis 🤣 I also 'roughly' follow VPD charts to allow for maximum transpiration, my temps are also sweet at 20oC-26/27oC The liquid amounts were kinda based on fractions of the pot too, my 1L feeds are like 10% of the pot, increase or decrease your waterings in proportion based on the size of the pot in the early days, I dont water to runoff cause I'm not synthetic.
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