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I cant imagine how the ph balances itself. My tap water is 7.1 or so and its aint that much work to balance the work so I do and I think about it, hardly worry. pH should be watched. TDS i my jury is still out on. Lets hear from others?

I purchased an inexpensive TDS meter TDS EZ by HM Digital I didnt think much of TDS readings. Its inexpensive. When I wasnt getting any readings near 1000 a Canna rep told me I should purchase an EC meter that was better and that ppm meters ignored things and that it was off. When I told him I...

Im trying to set up a cheap 400 watt dimmable ballast HPS system. I can pick up a dimmable (100/75/50%-400-250-125w approx) ballast for about 100 bucks but Ive been advised Lumatek, Galaxy, Nextgen, Amazon- Phantom ballasts are better. Got any good Ballast ideas:?: :joint: Bulbs...

I think you mean * for multiplication I have no idea what the ~ means. I do not understand the MREDUCK reference Cannot follow what you say. I can see you have been here a long time. I appreciate your concern. I tried reading Lumens, lux, and adding it all up but only slipped deeper into...

The 85% rule is something I heard. Thanks for reminding me. Im a little confused with the other I said 400 watts of electrical and 500 watts of cfl and assorted electric on a 20 watt. You say I have a 15 amp line (.85x2000=1700) and say it maxes out but it seems I have plenty of room (maybe 500...

I dont remember the math. Could you post it? Im running a 400w HPS and 500 watts of CFL and some fans all On one 20 Amp fuse. Aint blown yet but Id like to know more.