Mama Bear wrote:

The hard part seems to be finding them with sockets and ballasts. ( and
of course in wide spectrum MH )

http://www.hydrofarm.com/
http://www.hydroempire.com/
http://www.gchydro.com/
http://www.bghydro.com/
http://www.ecogrow.com/

Go google for hydroponics and you'll find even more.

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If I had something to say, this is where I'd say it.