@SneakyDog, I've fortunately never needed a filter as the smell doesn't matter and is minimal as there are only ever one or two smelling at any one time.
I don't doubt for a second pro lights achieve more, but just not suited to my situation.
Good luck
✌️
@Herbie, nice one. I’ve just brought some new lights but whilst I was waiting I took a leaf out of your book and used a normal 100w bulb and got great growth. Tent and MarsHydro TS600 for £124 but I don’t have any air filtering system yet just a fan