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Spider Farmer and Mars Hydro are the same company, just use different company name. Maybe Spider Farmer for low quality, and Spider Farmer sell high quality products.

I have a 240w waterproof from indexgrow, looks very nice, also it is a final light, i can use plug and play. the board is much bigger than the other suppliers, light spread is better, but the problem is shipping cost is expensive, maybe because the volume bigger.

meiju price is 3000k 80cri or 90cri? some guys told me lead time is 4 months for 3000k/3500K 80cri, crazy......:blsmoke::blsmoke:bongsmiliebongsmilie:blsmoke:

I have experience with both meijiu and kingbrite,,, but surely kingbrite are trustworthy. I have bad boards in hand, kingbrite send me a new board at once, and pay the shipping, but meijiu ask me to refund from alibaba, they don't want to pay the shipping.

try kingbrite W55 quantum bar @Huktonponics

thank you bro, i order 4X 480W from kingbrite, they have 3000K in hand.

bava and meijiu told me lm301b and lm301h is in shortage, they suggest me to use Seoul leds, any body use Seoul? is Samsung led real in shortage?

the circuit is shorted by the beads of the solder paste, when it is too hot.

Did you get compensation from kingbrite?

bava is better

Meijiu or Bava, which is better to buy?

it is too hot, more than 80degree, I think the heatsin k is too small.

My SF2000 only have 205W, 30W lost than HLG, what is the problem?

Meanwell have XLG ELG HLG driver, chose HLG driver if possible.

HLG is the best.

spiderfarmer SF2000 a finished lamp, very easy to hanging, but the thermal is not enough, heatsink is too small. Also, it use just 432pcs leds, and the driver XLG, I am wondering the quality.

who know the difference between the driver Meanwell HLG, ELG, XLG? should I use XLG driver to save money?

Use 2pcs 240W, I cann't wait to try my new light: https://www.alibaba.com/product-detail/Quantum-spider-light-240W-board-with_1600085693565.html?spm=a2700.icbuShop.86.2.2f70131baLsXkn. It seems better thermal than spider farmer.

Any body who can tell me why just use UVA(390-400NM), Why not use UVB and UVC?

Got it!