I have no experience with 1000w MH, but I do know where you can get them.
Atlantis Aquatics has them.
They only list 10KK bulbs in the 1000w range, so I don't even think you have the iwasaki/6500K option.
I haven't seen 1000w setups listed on any of the other sites yet. I would suspect that...
Perhaps these guys can help.
http://www.marineecosystems.com/DryGoods/ReefPure/ReefPureFilters.html
They claim to be the Master Distributor for ReefPure Filters.
I just bought an Aqua FX barracuda from Atlantis Aquatics. It came with a free TDS meter.
I like the unit, but I really like the John Guest quick disconnects at all the tubing fittings. It shows that they went the extra mile making these units....
Only had it a couple of days.. So I do not...
I have city water in a very old community.
My readings are similar to Newreefkeeper
Tap water: 320
RO water: 25
DI water: 4
And yes, I was referring to Brian at Atlantis
I think the deal is still on.
Last week I purchased an Aqua FX Barracuda RO/DI from Atlantis Aquatics. Brian threw in a Free TDS Meter.
This thing is pretty cool. I never knew how bad my tap water was Now I do!!!
I love the quick connect fittings on the unit. Aqua FX makes a nice product.