Mephisto Genetics Mephisto LED vs HPS Sour Crack AF-SOG!

[mephisto]

Well so far the way we've arranged them, light coverage seems good! But it's difficult to measure the intensity and then what amount of that light is another kettle of fish completely , we've just given back a light meter unfortunately!

 

[AutoFlw420]

Thanks you for the thread/ ima follow you grow, I've been reading up on Mephisto Genetics and I like your strains,Im not sure what strain I'm buying im still researching.I know im adding Mephisto Genetics to my bucket list.

 

[thetreeman]

Theres an app for android that measures light intensity, its free if you have a compatible phone/device. Are you using heaters with thermostats to keep the temps the same in each tent, at plant level?

 

[mephisto]

The extraction fans are temp controlled so they operate at a reduced speed until temperatures reach a certain point.
the only heater in there is a small fan heater, biased in direction towards the led tent.
I'm not too fussed about keeping both tents exactly the same, as long as both are within the temperature window for good growth.

 

[Corgy]

Theres an app for android that measures light intensity, its free if you have a compatible phone/device. Are you using heaters with thermostats to keep the temps the same in each tent, at plant level?

Is this the app you refer to https://play.google.com/store/apps/details?id=com.bti.lightMeter&hl=en ?

There is plenty Light Meter apps, so I played around a little, and this app seem to work, or lets say give a good indication of both Lux and color temperature. I tried it with different LED bulbs and outside, nothing scientific or anything like that, and was surprised it actually "recognised" different LED bulbs, white and warm white.

Tried it on a Samsie Galaxy Note 4

 

[mephisto]

I'm on an iPhone but the apprentice is with a Samsung, so we'll have a play with them.
we have a proper light meter it's just on loan!

 

[Spanglish]

Is this the app you refer to https://play.google.com/store/apps/details?id=com.bti.lightMeter&hl=en ?

There is plenty Light Meter apps, so I played around a little, and this app seem to work, or lets say give a good indication of both Lux and color temperature. I tried it with different LED bulbs and outside, nothing scientific or anything like that, and was surprised it actually "recognised" different LED bulbs, white and warm white.

Tried it on a Samsie Galaxy Note 4

Nice find, have been having a play with it and seems to work well. While looking at some of the other light meter apps i came across Androsensor (linked below) which also has a temp meter and rh meter, but looks like the only phones that support those sensors are the Samsung S4 and the Note 3, not my S5 as Samsung removed it.

https://play.google.com/store/apps/details?id=com.fivasim.androsensor&hl=en

 

[Corgy]

Nice find you too, tried the androsensor app.......info galore and can record and what not. Does not show color temperature though. Off hand think the Light meter is more user friendly, but for some Androsensor might be the better choice.

From the same Developer as Light Meter there is a Hygrometer app https://play.google.com/store/apps/details?id=com.bti.hygroMeter&hl=en

All this of course only works if the phone has the relevant sensors/quality of same, and none will measure PAR(for LED lights). This app, Lightning Calculations https://play.google.com/store/apps/details?id=it.Ettore.calcoliilluminotecnici&hl=en will convert Lux/Lumens to PAR values and all other known and unknown light parameters for that matter, but that is of no value, I think, i.e. taking readings under a LED.

My head is spinning from dappling in a little light reading, how about this for starters http://en.wikipedia.org/wiki/Color_temperature ........ light is a rather gloomy

subject best left to Rocket Science equivalent folks.......me thinks........bit out of my league I'm afraid

 

[mephisto]

Hey guys, we are official!

Day 1 - We have 71/72 sprouts above ground, 36/36 in the hps tent, 35/36 in the LED tent, as of 6pm tonight. - 01/02

Here are the readings from the kill-a-watt meter the other day:

1) Phantom digital adjustable ballast, uses a microprocessor to dim the output, however consequently, whatever power setting you have it on.. It draws the same power.
60%
75%
100%
all pull 624w

2) Cheapo adjustable digital ballast - by CSL
50% - 380w
75% - 483w
100% - 630w
'SUPER' - 640w

3) Lumatek digital adjustable
400 - 410w
400w Super Lumens - 438w
600w - 630w
600w Super Lumens - 657w

Magnetic ballast 600w - After 25 minutes it was at 430w, and then I got bored waiting.

The HS1 led's paired - 140w

The fan heater -
Position 1 - 784w
Position 2 - 1420w
(We are keeping it on Position 1 for the moment, Should be able to diregard it in about 4 weeks when temperatures improve)

Cheers!

 

[Margahooja]

Very cool. Those HS1s are intriguing. I can't wait to see how technology changes for grow light in the next few years.