HPS/COB options

Hey everyone!
Quick question...
I have to get some heat going on in my tent, so I'm adding my 400W HPS light in there.
In a 4' x 4' tent, with that HPS, should I add 400 watts of COBs or 200 watts???
I'm thinking I'd have to turn down the 400W, but probably would run the 200W at 100%...
What route would you go?

Here's what I'm dealing this go round...
I'm running the Timber 4VS and a duo of daisies... all 3000K... basically, 600W of COBs...
I just started flowering phase on 09/01 and I can't get the temps past the 80-82°F range with what I am dealing with... past couple days it's been running 77/78... and that'll continue to keep dropping...
I run my lights at night and during the day it stays in the low 70's...
I am answering my own question: HPS with the 4VS turned down...

The 400 watter is good for about 8 sqft (50 watts per sqft). That leaves 8 sqft to cover in your 4x4 tent. 8 x 30 = 240 or 8 x 35 = 280 watts of COBs to supplement.

So you want about 240 - 280 watts of COB's in there.

Hey everyone!
I added the 4VS and have it turned down a tad, but now I have question.
I've been running it like this for a little over a week and, with the change of weather, the lights on (5PM - 5AM) temp hasn't really topped 81°F... usually hovering around 79°F...
Daytime lights out temps have dropped down to the 69-70°F range...
All of which I was expecting.
With the added LED's mixed in with the HPS, what temp should I be shooting for? Lights on and lights off if you want to go the extra mile! Lol!!!
Thanks y'all!

Rock.A.Roo said:

With the added LED's mixed in with the HPS,

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I run DE HPS overhead and LED for side lighting. I aim for HPS temperatures (79F) since the majority of the plant is getting plenty of infrared from the HPS.

Renfro said:

I run DE HPS overhead and LED for side lighting. I aim for HPS temperatures (79F) since the majority of the plant is getting plenty of infrared from the HPS.

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Thank you sir!