conversion bulbs...

[Luke Skywalker]

Do they look dark green under the actual lamp light or in natural light? The true test would be to compare leaves of identical strains in identical setups with one under hps and one under MH to compare....

 

Best looking globe I've ever seen was a 1000w agrosun gold MH which had the same jacket as a 400w MH! Tiny... But the lumen ratings came out quite substantially lower. That doesn't necessarily mean much though, given that PAR is the true way to define bulb strength, not lumens.

 

Good on em for inventing 600w conversion bulbs though, it was a bloody good idea that has been needed for a while now....

[Guest Eikel]

Do they look dark green under the actual lamp light or in natural light? The true test would be to compare leaves of identical strains in identical setups with one under hps and one under MH to compare....

 

Luke... Read Dsyfer's first grow diary.

 

I posted a pic of the exact same strain Dsyfer had (clone was taken at the same time from the same Mum), at the same age, grown in the same conditions, but under MH instead of HPS... the difference is MORE than noticable.

 

MH = best veg performance.

HPS = best yields in flower performance.

HPS+MH = best of both worlds.

(I only refer to HPS and MH "horticultural" lights with added spectrums).

[Guest Eikel]

Luke... Sorry if I came across patronising, wasn't trying to be, just my typical self

 

Just wanted to show you the difference for yourself and put in my 2c.

 

That is all.

[Luke Skywalker]

No patronisation taken... You can't ask a stupid question if you don't know the answer, neh?

 

Yeah, I have heard many anectdotal reports of greener leaves, but is this necessarily better?

 

Some would opine that a healthy leaf is one which isn't filled to the brim with chlorophyll, thus dark green, but one which is lighter and almost edging on yellow/green. Obviously pure yellow is bad, but a light shade of green is what I'm trying to get at. This would imply that although there isn't spectacular chlorophyll levels, it's the efficient use of the chlorophyll that is important.

 

But yeah, I'd have to agree with you though on that HPS/MH/MIXTURE comparison. In the end though, most peeps I know just go with one lamp system unless they're right into dialing in all the factors like you or I would.

 

Cheers.

[dsyfer]

Some would opine that a healthy leaf is one which isn't filled to the brim with chlorophyll, thus dark green, but one which is lighter and almost edging on yellow/green. Obviously pure yellow is bad, but a light shade of green is what I'm trying to get at. This would imply that although there isn't spectacular chlorophyll levels, it's the efficient use of the chlorophyll that is important.

<{POST_SNAPBACK}>

Had some loose change so might as well chuck in my few cents as well

 

Now I am no botanist by any means (in fact currently reading my first botany book)

 

however, I would have thought the more chlorophyll = the more potential growth?

 

Wouldn't the promotion of the most available cholorophyll be the best way to get the

 

best growth?

 

or would the best be a perfect balance between use and availability? and if so

 

what colour would that be?

[Luke Skywalker]

More chlorophyll could indeed mean more photosynthesis, and thus more sugars and growth. But it could also mean that light levels aren't adequate and the plant is trying to produce more chlorophyll to offset this.

 

Orchid growers are well known for growing their plants "hard" and looking a little worse for wear in the leaf department. A lush green orchid won't flower as well as one with light green/almost yellow leaves if there is sunlight being provided. (We are talking about high light plants here, not those which grow in the undercanopy.) But in the end, it's flowers we want, not pretty looking leaves, so if you have plenty of sugar being produced from less chlorophyll, (which itself turn requires energy to produce) I would imagine that the better way to go from an energy efficiency point of view....

 

I too am no botanist, just a plant nutter, so if anyone can point to something which shows that plants which have dark green leaves produce better yeilds than those which have lighter shades, within the same strain....

 

This is a groovy discussion.

[keepleft]

scratch my previous comment about the reliability of conversion bulbs. i just had another GROWUP 600 watt MH conversion blow on me in 6 mnths. thats a 50% failure rate!

 

the sunmaster one is still going though. but i aint buying anymore of the GROWUP brand.

Edited February 17, 2006 by keepleft

[v dub]

scratch my previous comment about the reliability of conversion bulbs. i just had another GROWUP 600 watt MH conversion blow on me in 6 mnths. thats a 50% failure rate!

 

the sunmaster one is still going though. but i aint buying anymore of the GROWUP brand.

Cheers for the info dude, I was going to get one of those, will def get the sunmaster now, thanks.

 

I agree also Keepleft, alsways get shorter nodes and darker leaves with MH. In the past I had MH and HPS rigs so this is much cheaper/convenient IMO.

[Guest SOMEONE]

yeah

im not has happy as i used to be with the performance..

venture died

so i phillipsed it thinking they where superior

to my suprise it dont work only after about 400 hours not happy

i may go back to the m/h stand alone

 

take acre

s

[keepleft]

still got 2 x growups and 1 x sunmaster going ok.

 

as i said prevoiusly, 2 x growups went kaput after < 6 mnths.