Humidity domes?

[dddaver]

I have left some strains under the dome up 3-4 weeks. But I just started some Jack Herrer that started fine. I didn't check for a couple days and then all were dead. They had sprouted tall and leafed out a little but then just died. I smelled mildew when I removed the dome. I also think the culprit may have been this weak-ass little LED bendable arm grow light I got off ebay that I was using. I used CFL before. Worked great. I'm going back to it.


Anyway, how long can plants be left under your humidity dome? I like not needing to water during then. Basically, I'm lazy.

 

[RockinRobot]

Should only use a dome for clones not seeds. Even with clones I only leave the dome on 3 days and remove it for a few minutes daily to allow fresh air.

Seedlings will tend to damp off the stem in a dome if too wet.

 

[Lester Beans]

Domes work fine for seeds. Just need to make sure they are vented and not damping off.

 

[Mr. J]

You need to find your ideal lazy/take care of the plants ratio. Right now I'm afraid you're just too lazy.

 

[dddaver]

You need to find your ideal lazy/take care of the plants ratio. Right now I'm afraid you're just too lazy.

Thank God at least I'm not some judgemental asshole. But I will focus on due diligence I should have known somebody would say one thing then somebody else would say the opposite....due diligence, yes sir. Laziness is winning. Usually does though

 

[nickman]

I can get pretty lazy myself sometimes bro...!!!...

Your not alone... lol.

 

[RockinRobot]

Domes work fine for seeds. Just need to make sure they are vented and not damping off.

Unless you're in a very dry climate there is absolutely no reason to put a dome over seedlings. It won't help them grow any faster and it greatly increases the chance of damping off.

Keeping the humidity high is necessary for new clones as they can absorb the water through the leaves until roots form. Seedlings already have all the roots they need to support their needs.

The humidity dome also won't help much in how often you need to water. How quickly the media dries is related more to size of the plant and how large a root system

Just because you can do something doesn't mean you should.

 

[indagroove]

Setting up an autowater system is one of the best thing for lazy growers to do. Sure, you have to get off your lazy ass for one afternoon to set it all up, but after that you can ignore your plants for days at a time if that's your thing.

 

[dddaver]

I have used domes for years. And I live in Florida. I found young seedlings like the added humidity till about the third node, when they're strong enough. Very successfully I might add. I just hadn't checked these particular seedlings for a couple days. I LOVE experts. Especially when their grandiose advise flies in the face of evidence and practical experience. And that guy who said rock wool is only for hydro. Hilarious. Thanks. Made my day.

 

[RockinRobot]

You want to use a dome use it. Never said it couldn't be done just not necessary.

The fact you've gotten away with it doesn't mean it's the correct way.

 

[Mr. J]

Nobody said anything about rockwool either. Also why come on here asking stupid questions and then bitch at everyone who answers? Maybe take some of your own "grandiose advice" and you can be one of the "professionals" you love so much. It looks like your "practical experience" has you killing seedlings and making dumb threads so maybe not actually.

 

[Fred Sanford]

 

[f-e]

Can't we just outlaw rockwool completely. Nobody seems to understand the stuff anyway. Here comes Joe Grow, in from the store with his nice new itchy shit. Handling it dry. Getting dust everywhere. That is destined to get on at least some buds. For direct inhalation. Leading to oxygen masks and death from asbestos-is related lung issues. I have no idea how he gets rid of it either. I have outdoor sites where I still dig up 1" cubes from when I used them a decade ago. Amateur growers need protecting from this stuff, and pro's should really find an organic solution.

The tray the cubes come in is useful. Cover it in coco, and then clear off anything stood proud with a straight edge. You get a lot of them trays from a dollar store, and a bag of coco will fill them many times. If that is way more coco than you carry, there are peat pellets or pre-made coco trays. Non of which needs a health and safety lesson and breathing equipment.



Without numbers, I can't talk about the humidity. It would be futile.

 

[Lost in a SOG]

Only ever had issues when ive kept seedlings in too high a humidity, often has happened when putting them under domes that often goes above 75%.. just isnt needed.

I stay around 70% for the first couple weeks then come down.

 

[f-e]

Only ever had issues when ive kept seedlings in too high a humidity, often has happened when putting them under domes that often goes above 75%.. just isnt needed.

I stay around 70% for the first couple weeks then come down.

Do you find 70% promotes stretching? I like to keep it high while my seeds are just under the surface, to avoid drying out. But once they are up, I like to get down to about 50%. Lower than I like to veg at. Or I get a lot of unwanted elongation. With a real chance of them damping off. I think that's the term? A thinning of the stem just above the substrate, that causes them to keel over and die. A fungus issue I think.

 

[SolarLogos]

Here is my experience with domes. I read a thread that said put your clones in the medium, spray the dome, not the plants, then don't take off the lid for 10 days. I did it and had 100% success rooting just over 20 clones. I tried it a second time and had PM on the 7th day. Anymore, I remove the dome for 5 minutes/day for 3 days, then start opening vents.
You are right though, I have great success germinating seeds under a dome and the little ones do seem to love the humidity. Just my experience.
Peace, God bless

 

[stinkyattic]

Clones in grow plugs=dome, open and air out for a few minutes, check media moisture, close ... do this daily .
Clones on aero/bubble = treat with Wilt pruf, dim all the lights, cross your fingers, and ignore for a week or so. No dome.
From seed= dome optional til you get the first set of true leaves, then make the effort to harden them off as soon as possible. Tall domes mean you can't get your lights as close as desirable to prevent bolting, and the humidity is a risk factor for fusarium. Personally I prefer not to dome seedlings at all. It just means more frequent check ups to give them a little squirt of water.
I also put a fan near even young seedlings to encourage strong stem growth and yup, that means more frequent watering, but it is a weed after all and there ain't no domes in the wild!
If you live in an area that is exceptionally arid , or , on the other end, western new England in July (sticky icky does not necessarily mean good bud out here lol), your results may vary.

 

[indagroove]

Clones in grow plugs=dome, open and air out for a few minutes, check media moisture, close ... do this daily .
Clones on aero/bubble = treat with Wilt pruf, dim all the lights, cross your fingers, and ignore for a week or so. No dome.
From seed= dome optional til you get the first set of true leaves, then make the effort to harden them off as soon as possible. Tall domes mean you can't get your lights as close as desirable to prevent bolting, and the humidity is a risk factor for fusarium. Personally I prefer not to dome seedlings at all. It just means more frequent check ups to give them a little squirt of water.
I also put a fan near even young seedlings to encourage strong stem growth and yup, that means more frequent watering, but it is a weed after all and there ain't no domes in the wild!
If you live in an area that is exceptionally arid , or , on the other end, western new England in July (sticky icky does not necessarily mean good bud out here lol), your results may vary.

Best reply yet

 

[dddaver]

Gottin' away with it? Jesus, passive aggressive much?

 

[Lost in a SOG]

Do you find 70% promotes stretching? I like to keep it high while my seeds are just under the surface, to avoid drying out. But once they are up, I like to get down to about 50%. Lower than I like to veg at. Or I get a lot of unwanted elongation. With a real chance of them damping off. I think that's the term? A thinning of the stem just above the substrate, that causes them to keel over and die. A fungus issue I think.

No not really if im honest. i assume that comes more down to DLI and vpd.. also the spectrum of light but my babies are cabbages.. i start at 70% but instantly gradually lower it as DLI increases.

The killing blow in damping off is also often the effect of fungus gnat larvae eating rootlets.. just causes a positive spiral of rot.