AGRO 600W Sonlight VS SYLVANIA HPS 600W ?

GUYS !

i need some major advice,,,,the thing that worries me is that i bought a 600w agro bulb (with a grow kit) with a SONLIGHT Digital Ballast 4D (Dimmer 250 / 400 / 600W / Super lumens!)

but from just reading one thread where someone said he didnt like the grow outcome with it... it started to get worried...

A week before i had bought just the Sylvania SHP-TS 600W Grolux bulb, I was going to return it and get refunded... but if its true that the agro bulb isnt that good i guess il keep the 600w grolux and use that one....

Links the description of both bulbs

-sylvania shp-ts grolux : http://www.themariashop.com/en/sylvania-hps-600w-shp-ts-flowering-lamp.aspx

-600 w agro bulb : https://www.hydroponics.eu/grow-light-sonlight-agro-600w-high-pressure-sodium-lamp~1736.html

Im in urgent need of some advice..
 
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