need sum help wiv tempriture/ventalation

I've got a 1.2m square tent wiv a 600hps dimed to 400w as my plants are only 3 day old. I've got 2 clip on fans on low seting a 100mm intake plugd into a thermastate controler set to 35'c. A 125mm outake fan wiv a charcole filter conected no controler just permanantly on full power. Any my room temp at highist is 28'c avtige ov about 26'c n lowest is as low as 24'c wiv th light on and drops to sary low 16'c wen off if orderd a heater for the tent at nyt but worrid about leving it on constantly n iff I used a timer the temps will b up an down wont they any ideas guys

The heater should have a thermostat as well. Set it to come on the lowest temp you want.

Will that b fine to jus be left on then always wiv the thermastat set u was wored it may over heat and go pop lol. Thanx for reply ill udate thred once heater has arived n hopefully that will wrk

I've got a heater is. Ceramic 1 lol thst can blow hotor cool air out but I'm still worid that it dangres

Heaters bin.in a cuple day now temps and humidity levels luvly. Cuts shot up will try uplode sum pics. C wot u guys think.

Learn to speak grownup for more advanced help.

That's a bit harsh I'm useing a small touch screen phone its a little hard to write proply when you keep preesig wrong letters. So it was easer to write txt words sorry

Hey just a little update to anyone intrested. 2 and half week old temps fine now no problems since heater instaled. Ruffly about 30cm high nice thik stems. So decided toswitch to flower today once the lights went off. I was. Not plannig to switch till Monday but thought they looked big enough to flower 2 and half week from a clone what you think guys to early or fine bare in mind I will be flowering for 8 to 9 week plus a week flush. Any tips on anthing welcom as I am a biginer. Thanks¡