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I did google it before posting to the forum. I've seen both types marketed under various brands. You can buy a 600W MH HPI-T for £50 or a 600W...
tomato plants would be ideal. they are annuals so have the same flowering cycle and home grown ones taste friggin great ! (much nicer than what u...
Hi, I've been trying to find out what the following letters mean on growlamps. You get them on metal halide bulbs, it either says HPI-T or BLV HIT...