CrookFootDemon

@CrookFootDemon, Yeah I would definitely advise going on the specific of what the manufacturer says, my light has a dimmable switch so I used this when they were young too only use half the power of the light until the first layers of leaves appeared then I turned it up, but 2 of my plants were really happy with it about 15 20cm away, but 2 of them of them looking like they had light stress, yet one of the ones with light stress is a critical orange punch and one of the ones that are doing really well is a critical orange punch.. makes no sense Haha 🤣

@Bashgrowsitall1989, 230mm from the top of the plant I see the guide lines from the manufacture is 500mm guessing I should move mine up a bit.

@Bashgrowsitall1989,heya OK so heater in and we are up to 21 in the tent I have noticed a bit of nutrient burn on some of the bigger leaves anything I should worry about? I'm using canna professional soil and have added no nutrient's.

@Bashgrowsitall1989, ok purfect I have found an 80w one on amazon for £25 with a thermostat going to give that one a go.

@Bashgrowsitall1989, I will have a look at green house heater then. Any idea if the size I would need?