jcommerce
Well-Known Member
Whuhhh?? Responses on this one should be interesting.
Questions about useing Gavitas in tent....
- Thread starter FamMan
- Start date
I know, I can't wait.
jcommerce
Well-Known Member
Pics?
It is a proprietary method that I teach as part of my consulting business.
Sativied
Well-Known Member
You should use white chalk instead of mirrors for better diffusion.
I have a unique talcum powder dust that is kept constantly in motion by the use of induction fans and hover ties. This is similar but better than chalk.
jcommerce
Well-Known Member
Okay, okay....I didn't catch the sarcasm the first time. Got the joke.
Sativied
Well-Known Member
a senile fungus
Well-Known Member
OK OK jeez I'll buy one!
a senile fungus
Well-Known Member
Psh. Fiber optics bro.
Sativied
Well-Known Member
Ok.... 8 more to go to get a bonus
Cowboy Kahlil
Well-Known Member
The local hydro stores tell me some of the 5 yr guaranteed ballasts wear out in 4th or 5th year and can be a hassle to get mfr replacements. One suggested I go with a magnetic ballast (which she preferred b/c of rf interference). Another mentioned a 3 yr digital dimmable ballast they carry and pointed out a key thing: if it fails, they'll swap it out on the spot in the first 3 years. That made sense to me, so that's my likely course during this first tent grow.
So now it's figuring out the lamp. Since it won't be DE, I'm guessing it'll have to be swapped out every 8-9 months, so are the cheapies ($35-$45) gonna be as good as something like a higher end Ushio within that time-frame?
Since I'm starting from seed with this one, I'm hoping to harvest in July. By then, I plan to move to a site with more growspace and more height, and will consider all the potential upgrades for that second grow.
So now it's figuring out the lamp. Since it won't be DE, I'm guessing it'll have to be swapped out every 8-9 months, so are the cheapies ($35-$45) gonna be as good as something like a higher end Ushio within that time-frame?
Since I'm starting from seed with this one, I'm hoping to harvest in July. By then, I plan to move to a site with more growspace and more height, and will consider all the potential upgrades for that second grow.
Sativied
Well-Known Member
With possible exceptions, no, the difference between a good one and a bad (cheap shit) one can be larger than the difference between an old and a new one.
a senile fungus
Well-Known Member
@Sativied
The sales guy at the hydro shop spent about 30min attempting to explain how a batwing reflector will out perform a gavita hands down, every time. He talked about how it has better reflectivity (German engineered aluminum man) and more of this and more of that.
Then I shut his mouth when asking about umols and ppfd. He'd never heard of them.
But he's confident that the batwing will totoally outperform gavita, he's very confident in my purchase...
What a fool.
I explained to him that he could use about 30% less light and increase harvests if he went with a few of my suggestion. He actually started taking notes, I drew him a couple pics... Then I left once he started trying to sell me organic nutes. "This bottle has every amendment on your shelf in it and more, totally all natural!"
Interesting experience nonetheless. I've got two new batwings (German engineered aluminum man) for my 315w CMH so I can veg with them horizontally.
Played with the gavita in the store, I'm leaning towards just making the purchase...
The sales guy at the hydro shop spent about 30min attempting to explain how a batwing reflector will out perform a gavita hands down, every time. He talked about how it has better reflectivity (German engineered aluminum man) and more of this and more of that.
Then I shut his mouth when asking about umols and ppfd. He'd never heard of them.
But he's confident that the batwing will totoally outperform gavita, he's very confident in my purchase...
What a fool.
I explained to him that he could use about 30% less light and increase harvests if he went with a few of my suggestion. He actually started taking notes, I drew him a couple pics... Then I left once he started trying to sell me organic nutes. "This bottle has every amendment on your shelf in it and more, totally all natural!"
Interesting experience nonetheless. I've got two new batwings (German engineered aluminum man) for my 315w CMH so I can veg with them horizontally.
Played with the gavita in the store, I'm leaning towards just making the purchase...
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Sativied
Well-Known Member
Besides from bad advice not a great salesman either, can't imagine much of a profit on a batwing.
German aluminium huh, wouldn't surprise me if the gavita reflector comes out of a factory in germany too. Regardless, he's a fool indeed, one of the key features of the gavita pro is the hortistar 96 reflector, made from some special micro aluminium and "96" because it results in 96% of the light to be directed towards the plants. It technically cannot be cleaned without damaging it (they litterally mention that on the site), soft dry or damp cloth if you have too. The reflector itself should be replaced (easy job) ideally once a year.
German aluminium huh, wouldn't surprise me if the gavita reflector comes out of a factory in germany too. Regardless, he's a fool indeed, one of the key features of the gavita pro is the hortistar 96 reflector, made from some special micro aluminium and "96" because it results in 96% of the light to be directed towards the plants. It technically cannot be cleaned without damaging it (they litterally mention that on the site), soft dry or damp cloth if you have too. The reflector itself should be replaced (easy job) ideally once a year.
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Cowboy Kahlil
Well-Known Member
Yeah, but you'll be wishing you'd bought the batwing if the Penguin attacks Gotham.
Sativied
Well-Known Member
Me too... the 750 that is... and then my car broke down on the way to the grow shop and it sounds more expensive to repair than a gavita...
I don't sell harvest, already have good enough gear, and since I'm pollinating every round... I don't really need it. Probably still going to get it though, I would need a new 600w bulb and new aluminium inlay strips for my gavita tripplestar hood anyway... and want to replace my old mag ballast with something dimmable/boostable. Might as well add $100 and get the complete 750 DE, which should work very well for my 16sqft / 1.5m2 "Lights more than 1,5 square meters with 1000 μmol m-2 s-1". I'll probably run it lower than 750 a large part of the cycle, and boost at critical weeks.
3 more days till the grow shop law goes in to effect...
I just noticed the prices for replacement reflectors and cheapest is 24 euro for the HR96 reflector, and 25 euro for the tripplestar strips I'd need. Roughly 30 USD.
Dadioski
Well-Known Member
Looks familiar, this was my first grow with 4 of the 6/750de fixtures and 2 of the new supplemental plasma's on light movers. I put them all on the Gavita EL1 controller which is really handy. The 375w to 825w adjustable range is good and the automatic watt reduction at a room temperature set point with a hard shut down at another set point saved my ass twice when the A/C circuit blew a fuse.
I vegged this grow too long, it got out of control but gave me 10 lb. 30" is about as close to the plants as I want to get from the lamps. Very efficient too consumption wise, 1/2 hp chiller, 2 tons of A/C, pumps, fans,and lights added up to $250.00 additional to my electric bill.
dakinelove
Member
Monster Gardens does a lot of the beta testing for Nanolux. The independent test results I've seen show a slight edge Nanolux has on Gavita...although they are very close.
Also, DEs are designed to work in tandem with other DEs. The secret to DEs and their increase in crop yield is not just about the lumens or PAR value, but rather the fact that the hood is designed to work with other lights. DEs produce what's known as horizontal light penetration in addition to the usual vertical penetration most are familiar with. This interlacing of light patterns increases the light penetration deep into the canopy by entering at multiple angles, averting the leaves that block vertical light.
Companies are coming out with hoods that will do a 5'x5' solid footprint, but this will simply be too much light for such a small area. Way beyond the plant's ability to utilize that much light.
People that have tried to use it as a single light will mount it closer to the canopy. This is analogous to making the footprint more concentrated with a new hood designed to do so. What happens when someone does this is that the plant starts to bleach, and if the light and heat are concentrated enough into one area, the plants shut down completely.
If you decide to use a DE in a tent I would seriously consider buying an air cooled hood like the AC/DE hood from Sunlight. If you use the open reflector, you will end up spending just as much money on ventilation each month as running the DE, and there's no guarantee that this will even work.
Also, DEs are designed to work in tandem with other DEs. The secret to DEs and their increase in crop yield is not just about the lumens or PAR value, but rather the fact that the hood is designed to work with other lights. DEs produce what's known as horizontal light penetration in addition to the usual vertical penetration most are familiar with. This interlacing of light patterns increases the light penetration deep into the canopy by entering at multiple angles, averting the leaves that block vertical light.
Companies are coming out with hoods that will do a 5'x5' solid footprint, but this will simply be too much light for such a small area. Way beyond the plant's ability to utilize that much light.
People that have tried to use it as a single light will mount it closer to the canopy. This is analogous to making the footprint more concentrated with a new hood designed to do so. What happens when someone does this is that the plant starts to bleach, and if the light and heat are concentrated enough into one area, the plants shut down completely.
If you decide to use a DE in a tent I would seriously consider buying an air cooled hood like the AC/DE hood from Sunlight. If you use the open reflector, you will end up spending just as much money on ventilation each month as running the DE, and there's no guarantee that this will even work.
