Sick plants moved from indoors to outdoors. After hardening off they recover. Why?

mouse said:

Might have to up co2 on my priority list. How much did the co2 meter set you back ?

Mouse

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I use the British-made EVOLUTION co2 controller, which has a co2 measurement probe and will automatically keep co2 levels at whatever you want. Cost ? I paid 800 british pounds for it. Expensive, yeah if you have a half-dozen plants. If you have a roomfull and you get faster growth and earlier finishing times, pays for itself quickly.

if its decent water it will be ph 7.5 but only just because of the low ppm so yeah it will be absolutely fine. I mean I use tap water

This issue annoys me. Could there be any other contaminates down there ?


Now I think about it, a very similar issue occurred with a cutting of mine that didnt root properly....

Mouse

Buddingbishop said:

No problem, i would move the lights closer and see how the plants respond

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Normally 2 feet for young plants under 1K of light is fine. Done it for years. I really don't think its the light but I AM using new reflectors (adjust-a-wings from Oz). Could these new reflectors be causing massive hotspots and bleaching my leaves ?? Now I'm really gettin paranoid

mouse said:

if its decent water it will be ph 7.5 but only just because of the low ppm so yeah it will be absolutely fine. I mean I use tap water

This issue annoys me. Could there be any other contaminates down there ?


Now I think about it, a very similar issue occurred with a cutting of mine that didnt root properly....

Mouse

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I'm a little suspicious about the water supply in my new place. It measures ok at 7.5 pH and 250ppm salts but I've noticed, after leaving the water standing in a bucket for 24 hours, that sometimes there seems to be a slight scum on the water surface. If I blow on the water surface, a hole appears in this scum and rapidly closes again. I have no idea if this is significant or what it means. It could simply be as a result of salt residue or it could be a contaminant - hence my current testing of the water.

Scum on the surface with such a low ppm ? What about your containers ?

Are you in the UK ? guessing not if you keep stuff outside.

It could well be the reflectors causing hotspots but those reflectors are pretty highly rated.

Im out of ideas I think....

Mouse

My containers are regular green plastic garden buckets. The scum could be due to some salt residue since I feed my 3 feet plants with nutes - these were the sick plants I kept from the original batch to see how they would evolve. Now I have another container for the 'imported' water to feed my new seedlings so I'm going to look to see if the same scum appears on my new water.

I'm in Switzerland mouse. Nice weather right now for flowering -mid-20's. so I'll be harvesting in a few weeks. I've got 9 Lavenders looking good right now plus the c99 from indoors that we talked about. I've just been out to check thatc99 and interestingly the 'indoor' growth basically died off completely leaving fresh green leaves of new growth and some nice colas and buds developing

You have an inlet, where's your exhaust?

cranker said:

You have an inlet, where's your exhaust?

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Thanks cranker. I exhaust into a garage using the same rated fan.