New Grower Cosz First Grow

[Trifid]

Muddy could be right if your mix is too hot to begin with.. Are you testing the pH of your water before you apply? i got a clear 5.8 last week so i let i sit 24 hours and pH rose to 6.8

 

[coszumel]

I have a General Dynamics PH kit. It came back yellow/green as the chart suggested it should be. It did come with PH up and Down but have not yet used it. The plants do not look sick IMO but I am all ears. I carefully measured the Cal/Mag and I have only seen one of the very first leaves with any yellow or yellowing at the tips. Let me snap some pics right quick. With the light on I get those dam lines, but i am runnning 24/0 right now. Is that the problem? Is it a thrist thing?


COsz

 

[coszumel]

Here are a couple of progression shots.

 

[Muddy]

I looked up your soil and it does look too hot for young autos. It looks very similar to OF which is known to be too hot for auto seedlings.

Made from only the finest ingredients, coarse peat, coco fiber, compost, perlite, pumice, worm castings, bat guano, fish bone meal, soybean meal, feather meal, kelp meal and much more.

I only see a little curling along the leaf edges and it doesn't look too bad. You've probably got enough nutes in the soil to at least lasts through veg, so doubt you'll need to feed them much, if at all. Just keep an eye on them and let us know if it gets any worse.

 

[TshirtNinja]

yah i would suggest plain water till they tell you they are hungry. that soil is fine though those ladies look great.

 

[coszumel]

Fellow Growers-

Muddy right on for doing some research on a newb like myselfs grow. How much water is appropriate? On this site I have read put your finger in the soils first 2-3 inches and if its dry, then time to water. I almost never see any run off in my 5gal tall pots. Am In watering too little? What would u guess at the proper amount. 1-2L per plant.

Also is there any harm in spritzing the plants. My lady did yesterday and the leaves have a new yellowness to them. Does that burn them?


Cosz

 

[Muddy]

I like to know about these things in case another new grower comes along using the same soil. Now we know it's hot so we can better advise in the future.

Best way to water is by the weight of your pots. Get a feel for them when they are dry, and only water when they feel that way. Do give enough so that you see run off from the bottom of the pots. As nutrients are use they create a by product of salts. By getting run off when you water you help to flush out those salts and prevent them from building up in the soil. If they build up too much they can stop the plants ability to take up nutes.

Misting really isn't necessary unless you are doing a foliar feed. Then it should be done when the lights are out. Water drop on the leaves can act like magnifying glasses, intensifying the light and causing burn spots on the leaves.

 

[coszumel]

Thats what has happened to me. Did it damage the plants or stunt yield? I appreciate all the info.

Cosz

 

[Muddy]

What happened? Are you referring to a salt buildup or the over nuting?

 

[Trifid]

I've never had this problem with CFL 250 or 125's but i've defo seen scorching from droplets outside on very sunny days and under HPS indoors.. Foliar feeding when the lights are on and temps ranging 75 -85F is not particulary effective since the stomata are generally closed at this time to limit transpiration. At times when salt build up and subsequent lock-out is to be expected foliar feeding at night is an alternative pathway for the plants to obtain readily available micro nutrients by diffusion. Be sure to reach the underside of the leaves since much of the stomata are located here. On the contary to what some would assume, the process of foliar feeding does occur in the natural setting since rain droplets on the foliage dissolve various particles from the air including free nitrgen and nitrates ect.. Some leaves are even shaped in a particular way to take advantage of this.

I wasn't aware that OF was too hot for seedlings - i have often considered it but never got round to purchasing some, i'll remember that for future ref. that is valuble information... Regarding starting mediums i'd say it's fundamental to get this right first time since if you choose a medium inappropriate for the plant's needs then its difficult to rectify without a transplant..