First time indoor grower, need help from experienced growers

Newfella21 said:

Hi Everyone,

I'm having a few issues with my first indoor grow, a lot I've been able to resolve myself, but this one issue I can't seem to figure out and hoping for some guidance.

This new plant is 17 days old, and started showing symptoms on first set of leaves about a week ago, from there it has spread to the 2nd set, 3rd set is looking ok for now, but the issue comes on fast, the 2nd set looked as healthy as the new growth 2 days ago.(only transplanted into 5 gal pot today).

For watering, it was initial watering of medium then basically nothing for 12 days, have recently watered a little bit last few days before transplant today, it may of gotten a little dry on a hot day and night before watered the next day.

I've also had it appear on one other plant (last pic), whilst I have 8 or so others that are not showing any symptoms, I've defoliated a lot of it from the older plant

Medium is well balanced but soil was cheapo big box store, water is PH'd and aerated, temps have been high at 27-29c the last week, with humidity ranging 50-65%, but try to keep temps around 25-26c.

My first thought was calcium/magnesium issues, as I tested my tap water and it's only 50ppm, but only the two plants showing issues, haven't really fertilised a tonne, trace amounts of fish emulsion and seaweed tonic mostly, but have added tiny amounts of Epsom salt and gypsum to water to see if that would help, issue still progressing though.

I'm not experienced enough on nute burn but it doesn't look like it to me.

Now trying to think of other potential issues, the seeds are very old (10 years) and storage wasn't the best, but I did soak them in 3% hydrogen peroxide for 12 hours before they went into paper towel/ziplock, so hoping that cleared anything that might of been pre-germination related.

Could vapour from a humidifier cause the yellowing and spotting, I don't treat the water that goes in and we do have chlorine and chloramine treated city water.

or could it be bacterial or fungal related?

I can answer any questions about it as I've probably left off important info.

Thanks for any assistance

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hotrodharley said:

More details on this soil because that’s the key to your issues here.

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Southernontariogrower said:

promix xp m

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hotrodharley said:

More details on this soil because that’s the key to your issues here.

Click to expand...

Newfella21 said:

Soil is basically Scott's osmocote seed and cutting mix and a small amount of same brand premium potting mix, with perlite, has the slow release feet pellets evident along with some mineral ferts.

It does have water retention crystals and slow release pellets though.

I've been trying to support soil via great white myco, and a liquid microbiology which is basically bacterial kelp, seaweed, and fish.

In regards to soil, Ive since gone out and spent far too much on a number of things, soil going forward will now be compost, perlite, work castings, low levels of chicken cow and sheep manure, think 6lt cups total animalmanure for 50lts mixture.

Then dry amendments, gypsum, Epsom salts, oyster shell power, alfalfa meal, kelp meal, and a few others have also gone in.

If it's soil there's probably not to much I can do about it? Hopefully with transplant into healthier soil it will resolve itself.

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Newfella21 said:

Soil is basically Scott's osmocote seed and cutting mix and a small amount of same brand premium potting mix, with perlite, has the slow release fert pellets evident along with some mineral ferts.

It does have water retention crystals and slow release pellets though.

I've been trying to support soil via great white myco, and a liquid microbiology which is basically bacterial liquid kelp, seaweed, and fish.

In regards to soil, Ive since gone out and spent far too much on a number of things, soil going forward will now be compost, perlite, work castings, and low levels of chicken, cow and sheep manure, think 6kg worm castings and 6lt cups total animal manure for 50lts mixture.

Then dry amendments, gypsum, Epsom salts, oyster shell power, alfalfa meal, kelp meal, and a few others have also gone in.

If it's soil there's probably not to much I can do about it? Hopefully with transplant into healthier soil it will resolve itself.

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Southernontariogrower said:

Its the fert they add, like everyone else, they think more is better. I always buy non fert soilless medium.

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Newfella21 said:

Soil is basically Scott's osmocote seed and cutting mix and a small amount of same brand premium potting mix, with perlite, has the slow release fert pellets evident along with some mineral ferts.

It does have water retention crystals and slow release pellets though.

I've been trying to support soil via great white myco, and a liquid microbiology which is basically bacterial liquid kelp, seaweed, and fish.

In regards to soil, Ive since gone out and spent far too much on a number of things, soil going forward will now be compost, perlite, work castings, and low levels of chicken, cow and sheep manure, think 6kg worm castings and 6lt cups total animal manure for 50lts mixture.

Then dry amendments, gypsum, Epsom salts, oyster shell power, alfalfa meal, kelp meal, and a few others have also gone in.

If it's soil there's probably not to much I can do about it? Hopefully with transplant into healthier soil it will resolve itself.

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Southernontariogrower said:

If you finf little balls on surface after watering, dont pop them they are worm eggs from castings. Look different than fert.

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Newfella21 said:

I'm beginning to think its the nutrient component in the soil pre-mix and just the medium just getting too dry.

The reason I saw this, is that on all my overwatered stunted earlier plants, the issue hasn't appeared at all, only on one's I'm pushing with the lack of watering (due to being to generous earlier - still refining that skill set).

Here's a photo of some well overwatered plants, they like 35-40 days old, barely taller than a bic lighter, very overwatered initially, but still growing after letting it breathe, but no similar issues as seen on these two.

Does anyone know would cause this due to a dry medium?

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Budzbuddha said:

Skip slow release fert soils .... they tend to do things EVERY time you water. Pelletized / granular.

There are better bagged “ soils “ .... Roots Organic , Dr. Earth , FFOF , Happy Frog , EB Stone , ProMix , Sunshine , Black Magic , etc.
Keep things simple and you will grow fine.

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Budzbuddha said:

Skip slow release fert soils .... they tend to do things EVERY time you water. Pelletized / granular.

There are better bagged “ soils “ .... Roots Organic , Dr. Earth , FFOF , Happy Frog , EB Stone , ProMix , Sunshine , Black Magic , etc.
Keep things simple and you will grow fine.

Click to expand...