There are quite a few items on the market that are labeled 'grow bulbs'. Some are as close to useless as it's possible to be. Some are excellent. Most have their strengths and weaknesses. What would probably be best in your lamps would be fluorescent bulbs, the ones that look like regular bulbs but don't put out the heat and have much stronger light. They would give you better light for your minis and would have the added advantage of being something that you can leave on for long periods of time. Their initial price is higher but they last MUCH longer and use a lot less electricity, so they have advantages for the environment and your wallet as well. You can get the plants quite close to the light without risk of burning them. Sinns. prefer a little more light, or a longer day-length, than your AVs.

Hi Corwin,

The Violet Showcase has something called the intelligent plant light that is pretty much for one plant. It may be just the thing for your sinningia white sprites. I have put the catalog address down at the bottom. Scroll down about three pages and there is a picture of it. They are a little pricey, but they may just do the trick for you.

Larry

Here is a link that might be useful: The Violet Showcase