Hps 250w vs 400w

I recently upgraded to 400w hps for my 2.5x2.5x6 grow tent. I got a perfect ventilation system but when i am using the 400w, the bulb has to be 35 cm away from my plants, in contrast with the 250w that has to be 15 cm away, in order to have 80f temperature. I got 4 plants, which do you think is the best bulb to use?

The biggest you can fit...400 is what id pick.

Yes but according to the hps lumen chart its better to use the 250w....

400 is a better option for that size area.

In such a small area I would go with the 250W, simply to keep temperatures at a moderate level.

Is the 400 in an air cooled hood? Or cool Tube?

its in a cool tube

Will the job be done better with the 400w for sure?

nick8 said:

Will the job be done better with the 400w for sure?

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If you have a cool tube and a way to pump the hot air to another room/outside then go for it. Cool tubes seem amazing from the way people on the forum talk about them.

nick8 said:

Will the job be done better with the 400w for sure?

Click to expand...

abso-fucking-lutely

400 will be awesome in there just vent that hot air out where it cannot be recirculated

400 cool tubed. I use to run that set up, it was great for a personal grow

Jam that 400 in there bro....trust us. Your plants will love that higher wattage. Cool tubes suck for light spread (great for heat removal) but in that small of a space its negligible. Even cool tubes have there place and your setup is perfect for a 400 watter in a cool tube.