I would virtually beg you to do it the other way around and use the IS320 during veg and add the viparspectra's towards the end of flower.
Did you go for the 3000k set up?
The spectrum on the IS320 is far better suited to canna than the old school blurple spectrum on the vipaespectra. That being said, there's alot of talk about adding blurple late on in flower to induce higher trichomes production in the later stages.
Blurple lighting tends to have a bit more UV b and UV c light spectrums, which is what causes the plant some extra stress in late flower, increasing trichome production.
18 to 24 inches is about right too. The best thing with the IS320 is the dimmable option. This allows you to control the light during veg period much more precisely. Like your veg and bloom setting on your vipraspectras but better lol.
In a 1.2 x 1.2 I would have the IS320 dimmed down to the minimum setting for the first 3 weeks of an auto, then I'd up it slightly to quarter power for the stretch period. Then a couple of weeks into flower, up it to 3 quarter power, then the last 6 weeks I'd up it to full power and possible add 1 viparspectra for the last few weeks. Obviously this is all depending on how the plants react and tweaking it as you go.
Trust me, 1 run of vegging under these boards and you wont be disappointed. All I see on the talk is people surprised at how well their plants are vegging under these white lights.
Sent from Thames Iron works
Bookmarks