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My refractometer has ATC. I was just advised on reefcentral's chemistry forum that calibrating with the pinpoint solution is the best way to go. Because you are calibrating at the same point you want your water at. Makes sense to me.

Is it best to calibrate with distilled water as the instructions state or to use something like pinpoint calibration fluid? With the distilled water you are calibrating at 0ppt. With the pinpoint solution you are calibrating at 35ppt, wich is the same number I want in my tank. I was just curious...

Layered is what I really meant. You would change the gfo that often? Phosban claims it's good for 3 months as well.

It's ok to mix it with the gfo in the same reactor?

My filters and DI resin are 3 weeks old.

Carlo, What do you use with the gfo to remove silicates? I tested my topoff water last night and was not happy with the phosphate reading. I didn't test for silicates but I'm sure they are there.

I like them. They are a bit tricky to set but I trust them more than my reefkeeper2.

Well the tank is 5 months old. I looked back at a few pics, what a difference, especially under the tank. And in the tank as well.

Way off track..LOL. Clockwork Orange - 1971.

Freaky?......Not at all, that was a great movie.

Thank you. That's more like it. I did a google search for plastic solenoids and everything I found was very expensive.

Is there a simple way to have my rodi unit come on and run automatically for like 3 hours every few days? I don't want to leave it on constantly because everytime the water drops an eighth of an inch in my topoff conainer it runs for like 10 seconds, I know that's not good.I've been running it...

I'm using Seachem kalk, that's all the lfs had that day. I'll check the effluent ph tonight. The fan sounds like a good idea, I'll try that this weekend. As far as the plants go, I don't know. All my wife has to do is look at a plant and it turns brown. Maybe I can use that as an excuse to...

I see this is a common problem, low ph that is. I've read all the threads and articles I could find but, I still have a ph of 7.8. It has actually been dropping to 7.65 at night. I recalibrated my reefkeeper and double checked it and it is correct. My calcium is at 350, mag at 1300, dkh at 10...

I get 300 before and zero after. 30 is too high. Is this a new unit?

I picked up a couple frogspawn from roadking05. And a scotts wrasse from divers den.

If the cabinet is open in the back you should be able to wiggle it in there. Maybe.

Carlo, I thought about a cheap skimmer, sounds good. What about the exiting water and air do they really need to be run through carbon?

The skimmer will be a Deltec AP851. I don't want to mess that up. But a good reactor is 375. Just want to know my options.

What is the BEST way to use ozone? Through my skimmer or through an ozone reactor? What are the benefits and drawbacks of each?