As there is many company produce HQI bulb for aquarium use, such as AB Aqua Medic, ADA, Osram, Hitlite, Sylanvia... with difference K. Most of them are in a higher price.
Many members had mentioned which one is good which one is worst.
I think that choose a right bulb is a critical factor that affect the plants growth.
I hope you can share your experience & further informations for me to select a right one to replace the old one (Orsam150w NDL).
I need those informations as you can suggest.
( The brand name, Model no, Walt, price, K, any obivious change in plant appearence.)
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