I need some heat!!!

[DenialTwist]

I'm 4 weeks in since germination and my blueberry plants are healthy. I have now started with the fans to build up good stem strength and facilitate LST...however...what I was really carefull of is coming back to bite me. Heat.

I have 9 18W energy saving CFL lights. Total wattage would work out at 1000W and it seems to be doing the plants well. However they don't generate any heat. Temperature in the grow room is 21C but with the fans it drops to 16C, which may be too low.

Any ideas how to bring some heat in?

[dexorated]

last time I checked 9 x 18 = 162... not 1000. I don't know how many plants you have, but you need 100 watts per plant in flower. You have a nice setup for 2 plants.
I'm thinking you need more lights... and that will raise the heat.

[DenialTwist]

Originally Posted by dexorated

last time I checked 9 x 18 = 162... not 1000.

Yes that is correct. The bulbs themselves are energy saving ones generating 120W each. so 120 * 9 = 1080W. I have just bought another 5 lamps that I am going to put on a side wall. I hope adding some more lights will increase the temperature by a few degrees cause as soon as the fans start the temperature drops quite considerably.

I'm finding that the light so far is enough for 5 plants. I suppose I better start a thread on my grow then, but if anyone had any ideas how to increase temperature without the use of any thing flammable it would be appreciated.

Cheers,

Twist

[FrostAie]

get a heating pad and some plastic and put the heating pad on low and put the plastic over it and put your pots ontop of the plastic this should warm them up lol or go to wal mart and buy a 9.99 small heater dont get to big or it will dry the air out

[spastic]

Originally Posted by DenialTwist

Yes that is correct. The bulbs themselves are energy saving ones generating 120W each. so 120 * 9 = 1080W.

When people here say you need 100w per plant it is the actual wattage, the 100w equivelent meants it is as bright as a 100w incandesent bulb nothing more, it does not take 18w of energy and magicaly increase it to 120w, only thing i know that does that is radar. you are going to need about 6 of those bulbs per plant in the flowering stage.

You can believe us and get better plants and buds, or stick with your math up to you its your grow.

As for the heat, dont use a fa n until it gets warmer, just shake them a bit when you look at them(not to hard), Thats what I do and it works just fine.

Good Luck!

[Icky01]

floros and hps lights are two different things a 15w floro generates the same lumen as a 60w incandecent so he is right on that but what i did was get a space heater been working fine if u have it on a timer because it will give off light

[Idontevensmoke]

Wattage is important, but it is not the biggest factor in this issue. The bulbs are fine for your plants as long as they are getting a good amount of the light, and you have some reflectivity (white walls? mylar?). The bulbs should be producing a good amount of lumens, and giving your plants the light spectrum needed for its growth (blue spectrum, 2-5k lumens per sqft, 5700kelvin). As for heat, yeah, you can pretty much get a cheap heating pad at any department store.