Boret

If that works that would be a great find. Thanks Tom. Cheaper than the quinhydrone powder. I am a bit affraid of this though: Contents: 5 packets of +92mV, 5 packets of +265mV Quinn-7 is supposed to be +86mv and Quinn-4 263mV The 265mV solution will work but the 92mV is 7% different...

He didn't tell me to calibrate, I called and asked what the heck was the Quinn-4 and Quinn-7 coming up in the ACIII screen. It was my decision to calibrate, just in case. I had the Redox 400 and was about to use it when the weird message appeared on the screen, so I called Curt and asked. As a matter of fact, I didn't need to calibrate because once I placed the probe in the 400 solution after 45 mins I was getting a 394 reading.... close enough. He explained the need to use the Quinhydron powder with pH7 and pH4 solutions to create the Quinn-7 and Quinn-4.

The way the ACIII calibrates the ORP is by placing the probe in two solutions with a determined mV value. The controller calls them Quinn-7 and Quinn-4. Same basic mechanics as calibrating the pH probe. However, they don't sell these solutions but you can make them. Redox Standard Quinn-4 - 263mV @ 25oC 1. Take a 20ml sample of pH 4 Buffer Solution. 2. Add a small quantity (approx 0.05-0.1g) of Quinhydrone Powder. 3. Shake vigerously to mix. (Very little quinhydrone will dissolve, so the solution will end up grey/black). 4. The Redox Standard is now ready for use. 5. Discard after use. Redox Standard Quinn-7 86mV @ 25oC 1. Take a 20ml sample of pH 7 Buffer solution. 2. Add a small quantity (approx 0.05-0.1g) of Quinhydrone Powder. 3. Shake vigerously to mix. (Very little quinhydrone will dissolve, so the solution will end up grey/black). 4. The Redox Standard is now ready for use. 5. Discard after use.

I spoke to Curt and he told me to get that powder to be able to calibrate with the ACIII. You can check how OFF your probe is with the PinPoint 400 redox solution, but Curt also mentioned that he doesn;t trust the solution that much... I tested my probe and it was reading 394 after about 45 mins in the solution, so I need no calibration, but it would be nice to get the powder. This is the only one I found so far: LINK $40 plus shipping for 25g.

In order to calibrate the ORP probe in the Aquacontroller III I need to make my own 2 solutions with pH4.0 solution and pH7.0 solutions, mixed each, to the point of saturation, with Quinhydrone powder. Where can I get that powder locally? Do any of you have some I could buy? Do any of the LFS carry it? Thanks!

Thanks! I thought it might have been the other way around!! I guess a have quite a bit of flow!

Thanks kngfisher. With the aim of 50 to 100 gph out of the Ozone reactor I think I would be better off getting a smaller media reactor to filter with active Carbon the effluent from the O3. Nextreef sells a shorty that might be the perfect complement for the GSA Ozone Reactor. That way I can put the regular media reactor on a different output and get the media fluidized.

Thanks John for the detailed information. Would you care to explain why the fish system is that low? Hypo-salinity to fight diseases? I have read this online: Is that the reason? Thanks!

$400 is too much $$ for what you are getting there. If you have the space you can put a sump under your tank inside the stand, you can add a skimmer to it and you can have a section for a refugium. Lighting a refugium doesn't require expensive lighting. As Der ABT mentioned, it is a pretty crappy skimmer. I can see the appeal of not having to drill your tank or use an overflow box, but if you haven't setup your main tank yet I would drill it, use a smaller tank as sump and get a decent skimmer.

+1 Lights and controller! As far as lights I would consider a retrofit, you can save money unless you can get a great deal on a light fixture.

Good point!

Hey Dave, what flow produces which behavior? More flow thinner and less flow thicker? Because I get really thick and stubby growth out of my Birds of Paradise.

It seems the majority strives for the 35ppm mark. I've read that you are less prone to infections at slightly lower salinity, you use less salt (save some $$) and many retailers and vendors keep their livestock at around 32-33 so there is less shock for new fish. It could be all a bunch of BS though! I imagine that lower salinity will also affect the number of Ions and therefore give you lower Ca and Mg levels. I think I will try to go up to 35 from 34 and try to maintain it there for the next 6 months to see how it affects my tank. Keep the numbers coming!

Yeah that longhorn is HUGE! The tank is amazing, as always, much much better in person. Great job Dan!

My clowns won't even get close, they host my leather coral.