Chemist77 315 watt CDL grow

as you can see the plants have easily doubled in height in 1st week of bloom.. they have branched out well to fill in table..
should i clip some of the lower branches???????? i try to keep the lamps 2 feet above canopy, the intake and exaughst run on a thermostat set at 72 degree f..so its never above 73f and durring lights off it never gets below 65f.. so less than a 10 degree diference from light to dark..im also trying to achieve a negative air pressure in the room my intake is a 250 cfm inline fan pulling cool air into room wile my exaughst is a 400 cfm inline pulling the air near the ceiling out the 6inch chimney duct..
week 1 plants wer getting general hydroponics flora nova grow at 3/4 tsp per gallon, i cleaned and changed the rez on nov 7th plants are now getting 50% grow, 50% bloom at 1 tsp per gallon.. next week they will go to 100% bloom..

Yeah, they're in the stretch, looking good! The lower branch thing is a personal choice. I go by the plant/strain/shape, if I can get light to the bottom and enough airflow it stays. But I also use all the popcorn/trim for meds. Some claim that removing the larf re-directs energy to bigger buds up top but idk about that, haven't seen any science or results to back that up. I do the same thing, gradual change in feeds through the stretch, most of the stretch, until they start throwing flowers is vegetative, makes sense they can use heavier veg nutes during that period.

Week 3 Bloom.....

Dutch Passion Purple #1 seed mom......

Dutch Passion Purple #1 seed mom #2

ttystikk said:

The truth is that as long as roots aren't flooded for several hours or overnight, oxygenating the nutrient solution in flood and drain systems will only encourage growths in the res, where you don't want them; pythium, algae, etc.

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That is strange.. I would have thought it to be the opposite for pythium and other nasty fungi.
I didn't think pythium actually grew in water. I know they say it can be in rivers and ponds but I thought it was actually in the sediment of the river/pond and not in the water.

Looking great in there, look like they exploded in the last couple of weeks

HeartIandhank said:

That is strange.. I would have thought it to be the opposite for pythium and other nasty fungi.
I didn't think pythium actually grew in water. I know they say it can be in rivers and ponds but I thought it was actually in the sediment of the river/pond and not in the water.

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Never seen anyone running ebb n flood needing to use an airstone to get good results. The air gets to the roots as soon as the water recedes, so they aren't drowning.

ttystikk said:

Never seen anyone running ebb n flood needing to use an airstone to get good results. The air gets to the roots as soon as the water recedes, so they aren't drowning.

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with synthetic fed eb n flow.. yeah, probably not really necessary.
I didn't think aeration would actually cause problems though.. especially pythium.

My eb n flow are all aquaponic and/or organic. I run airstones in all of them. The water gets funky if i don't.. I don't do water changes more than once a year though in the hydro.. with the aquaponics, I've never done a water change, the oldest setup is about 5 years old... these are non mj gardens I'm talking here.

^BTW.. the pic a few pages back of your garden was rad. Nice setup man.

HeartIandhank said:

with synthetic fed eb n flow.. yeah, probably not really necessary.
I didn't think aeration would actually cause problems though.. especially pythium.

My eb n flow are all aquaponic and/or organic. I run airstones in all of them. The water gets funky if i don't.. I don't do water changes more than once a year though.. these are non mj gardens I'm talking here.

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Aquaponics requires oxygenation to keep fish alive, lol. I've long since switched to using waterfalls to feed my plants, I picked up the practice from aquarium keepers as being a better way to aerate water. They're right, and it might help your fish too.

ttystikk said:

Aquaponics requires oxygenation to keep fish alive, lol. I've long since switched to using waterfalls to feed my plants, I picked up the practice from aquarium keepers as being a better way to aerate water. They're right, and it might help your fish too.

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4 Aquaponic systems and 2 flood and drain (no fish) is what I run.. all get airstones, fish or no. The non fish mostly just get teas. Growth is far from explosive.. but it produces food.

But actually.. you dont need airstones for the fish i use. Koi and perch. Especially the koi do not need them. I just use the airstones to keep the tanks from getting smelly and to let the organics do their thing. You could say that keeps them alive though, in a way.

I'll stop mudding the thread. sorry.

But hey OP. Keep up the good work dude. I'm liking the thread. Super curious about the CDL lighting.

I think 3 of those 315s over a 6x4 is going to do some very good things.. I look forward to seeing your results. I think many people are.

HeartIandhank said:

4 Aquaponic systems and 2 flood and drain (no fish) is what I run.. all get airstones, fish or no. The non fish mostly just get teas. Growth is far from explosive.. but it produces food.

You don't need airstones actually for the fish I use.

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I can't wait to start playing with my food. I want to raise fish, ducks and plants on plants grown by fish n duck poop. And eat duck eggs and fish. And occasionally ducks. I think I could convert my old hot tub into a fish farm and duck pond. Whenever the water temperature gets too warm, I could just hit the jet pump for a few minutes! Ya think it would aerate okay too?! LOL

ttystikk said:

I can't wait to start playing with my food. I want to raise fish, ducks and plants on plants grown by fish n duck poop. And eat duck eggs and fish. And occasionally ducks. I think I could convert my old hot tub into a fish farm and duck pond. Whenever the water temperature gets too warm, I could just hit the jet pump for a few minutes! Ya think it would aerate okay too?! LOL

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haha. that would be pretty rad man. hydro powered on fish poo is so fucking easy. effortless, really. I don't do a damn thing but feed the fish, plant seedlings, and pick veggies. It is just that easy if you use a hardy fish.

You grow with the cdl too, right? What do you think about them?

HeartIandhank said:

haha. that would be pretty rad man. hydro powered on fish poo is so fucking easy. effortless, really. I don't do a damn thing but feed the fish, plant seedlings, and pick veggies. It is just that easy if you use a hardy fish.

You grow with the cdl too, right? What do you think about them?

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I grow with its bigger cousin, the 860W CDM. Mine run on magnetic ballasts, which makes them substantially less efficient than these.

Otherwise they're similar, especially in terms of spectrum.

just talked to boulder lamp,, in feb they will be coming out with 315 watt cdl lamps that include led.. they are in the testing stage now by feb they should be perfected with an hour of uv led's coming on ,,or is it ir? cant remember but looks really cool, pluss the led's around the cmh reflector will spread the coverage of the lamps to almost 5x5 at 2ft above canopy...im thinking about buying the led ad ons for 2 of my fixtures... they cant say too much as they are in the testing stage but go to boulderlamp.com and see the pix of cdl+led...

also states the ad on led prevent mold and pests....i beleive different colored led's will be available for veg or bloom?? what do you think ty? please take a look or call for info as you know way more than me on led tech.. id like to hear what u think

UV LED could be a good thing. Not sure how well it works, I'm not an LED expert.

@SupraSPL what do you think of this? Is there a good chip choice for UVB on the market? What's your opinion of such a light, paired with 315W CMH lamps?

For that matter, how much and how available ARE such UVB emitting LED chips?! LOL