150w hps with mh conversion bulb

I have been doing a lot of searching online and even on RIU and havnt not found an answer, I have a 150w sun system and there is a 150w hps to mh conversion bulb (Ultra Sun Metal Halide 150W conversion bulb) but everywhere i look they are sold out. Does anyone know why this is? If I cant find the mh bulb is it ok to keep my two plants vegging under the 150w hps at 18/6?

I have been looking more, the only manufacture making this bulb is Ultra Sun and the part number is 901533, when you do a search, a lot of websites seem to have it but when you click on the link it says product not found and the ones that do are sold out.

Anyone know what is going on. Did the bulbs have a recall? or defective somehow and had to be pulled?

Does anyone have any input?

http://www.plantitearth.com/grow-lights/ultra-ace-hps-conversion-lamps.aspx

seems a little pricey



edit* sorry nevermind that is a hps conversion for MH system. at second look im really having a tough time finding anyone with bulbs for your need. you may be looking at special order from a local hydro store / bulb surplus online retailer. gonna have another look ill let u know if i find anything. might be time to start thinkin about upgrading tho so u dont have to hunt for parts all the time

Lowes and Home Depot both carry hps and mh bulbs up to 400w....good prices too. I'm running one of their 400w hps now....been great.

thanks guys, both are helpful. yea i might have to get a dedicated mh system

I had the same problem. Spoke to growannex.com and they found out that the bulb was defective and the manufacturer is still working on fixing the defect.

damnit all to hell they need to fix it already its taking forever and i want this bulb badly.