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  1. Hello! I looking for a new e-ballast. Gavita electronic ballast looks interesting. Searching around, I found good price from Hanfburg for Gavita Digistar 600w. However, i read that Phillips GP is not recommended due different acoutic resonance (not sure if its right word). However I decide for Gavita lamp to be safe. Plus embedded cord on lamp holder for ventilated cooltube. But I dont find those things in the same shop. Do you know other shops that carry all three stuffs with competive price? If not, I might be forced to shop from two shops. I read that I lose about 30% of light with ventiliated cooltube in small growtent like Homebox S size with 400w hps. Is it not possible with normal reflector from Gavita in such setup, I assume? One small curious question that maybe Whazzup might have answer for? how many khz do 600w gavita delivers in comparison with Lumatek on dimmed mode at 400w? If I remember Lumatek delivers about 75khz. To summarize the whole post, I would be interested to look at list of shops that ship Gavita Digistar ballasts, there I may find other interesting products as PL-L, ph/ec meters etc. Thanks in advance for replies
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