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Watering a seedling

T1000
T1000started grow question 3 years ago
Hey, I learned that when watering you need to water until there ~20% runoff but I watered little at a time during 30 minutes or so and gave about 3-4L of plain water before runoff and even if two leaves have popped I'm worried. Is this normal ?
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Feeding. Other
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MrStinky
MrStinkyanswered grow question 3 years ago
Try this - I was sick of not finding helpful watering information for indoors growing ('lift the pot' or 'when it needs it' were frustrating terms I came across often) so I did a side project for myself to figure out average waterings in soil for organics all the below from my current grow: This is for an organic grow - no intentional runoff watering required, for synthetics you will need a slightly different approach and alternate feedings with clean pH'd water to orevent excess salt buildup in your medium. Get a small hand sprayer 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 when watering 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 airpots 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. The above is now my baseline watering guide.
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Papa_T
Papa_Tanswered grow question 3 years ago
Runoff when your plant is bigger. Not right now. Though I’m guilty of this too. Run off if your plant was in a smaller pot but this looks like a 5 gallon pot.
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Grow3rPT
Grow3rPTanswered grow question 3 years ago
Ola, nao precisas regar com tanto nessa fase. Basta 300ml de agua na primeira semana, so em volta da semente. Controla o nível de Ph da agua e importante. Boa sorte no cultivo
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