How do you light both growth stages?

by John
(Indiana)

I'm very tempted by your 400 watt HID combo light kit to grow tomatoes. But I assume all plants would have to be started at the same time under the MH light and then switching to the HPS when they start flowering. Ideally I'd want to start new plants while I still had ripe tomatoes but that doesn't seem possible. Do you use 2 growing areas - one with MH and one with HPS and move the plants from one to the other when they're ready? How do you stagger plants so you always have ripe fruit? Thanks!

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Answer from Stella/Simon:
Hi John,
This is always a recurring question: what light to use when you have plants at different stages of growth? There are two answers to thisit is:

1. As you suggested, two different growth areas, one for seedlings/new growth (use the MH bulb), and another for mature plants that are entering flowering or fruiting (use the HPS).

2. Use the HPS bulb for both; some hydroponic units utilize only and HPS bulb for the entire growth cycle. This is a good solution for those who have limited space or do not want to create two separate growing areas. Although the MH bulb is preferred for the growth stage, you can get by with using the HPS for both.

Hope this helps!

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Comments for How do you light both growth stages?

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Feb 11, 2013
Bulb
by: Anonymous

There are combination bulbs, like they give off both spectrum's, which os all the MH and HPS does, read up on it do some internet research, they are everywhere, however like Stella said, depends on what you are growing

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