He's not posted yet, so I'll update you on a few more things we got done. Sunday morning, we tested his water with a several different tests. Chuck's got many many kits on hand, and from different makers. I primarily used Salifert, but he also had a couple of Hanna digital meters that would produce results via a visual scan of the test sample. Those were kind of neat to see, and didn't take long to produce the test results. We also opened up a brand new multi-kit by Ocean Systems (?) and pretty much doubted that particular kit was accurate at all. It has a single vial test method (similar to pool kits) where you insert the matching colored plastic comparison chart and open a tiny foil packet containing a reagent, but even testing two times in a row, it wasn't right.
His other Calcium Reactor wasn't working correctly. The feed tubing had algae growing inside of it, which obstructed the flow going into the reactor. This was replaced with new tubing. Chuck, perhaps you can hang something over that area (paneling or even a simple towel) to stop light from shining on the tubing to prevent this from reoccurring. You could also use that black stuff that hold wires together, often used behind computer desks. It is removable and not permanent which would allow you to take a peek from time to time. Anyway, it still didn't solve the problem with the reactor, so he tried bleeding the air out of the top of the reactor and that solved the problem. I don't understand how it could have been vapor-locked since the circulation pump should move water and air easily through the reactor. I guess it was just a lot of air a the top and the pump was unable to create suction at this point. It didn't look like it was much, but I guess it was just enough to create an issue.
Speaking of which, we saw the same thing in Lunchbucket's new Euro-reef Calcium Reactor. Chuck and Eric are both using the Schuran media, which looks like stone noodles. You see a ton of airbubble rising inside not unlike some freshwater tanks. Chuck has another reactor under the 600g that is filled with ARM and it doesn't bubble up like that at all. Since both reactors are identical and the only difference is the media, we think the media is the reason for the bubbles. We need to find out from more people using that media to see if theirs are doing that as well.
We calibrated the Pinpoint pH meters, and installed his new Reefkeeper II. That was actually a very easy process once we got the powered plugs installed under the stand. Now with the press of a button, all three circulation pumps are turned off for 15 minutes when he needs to feed the tank.
Due to the way the tank is configured with those pumps, there is no way to keep any of them running during feedings. We discussed them all, and because the goal is to keep the food only in the display during those daily feedings, it was impossible to have any of them turned on:
One pump runs the closed loop with penductors. Each of those returns has an anti-siphon hole (which is good in case the pump or plumbing ever fails; it can't siphon out a lot of water) which are above water level when the other pumps are off. Leaving the closed loop running would normally be the best choice, but the anti-siphon holes suck in air and blow a ton of bubbles into the tank.
The second pump runs through the chiller and sump. Running it would draw water (full of food) into the sump & chiller. That's not a good option.
The third pump runs through the blue filters seen in the picture above. Some of those contain pleated filters that the food would trap against, and simply rot around the clock until the filters were swapped out. The food would clog up the filters prematurely, which Chuck is already changing out every 7 days. So that pump isn't an option either.
The Reefkeeper 2 makes it a lot easier for him, or anyone else tank-sitting, to press a button and feed the tank without the risk of forgetting to turn the pumps back on. They are the only form of circulation in the tank.
I showed him some minor things about how I use my test kits, refractometer, and how I clean and store the beakers. I really like how he tracks the tank's parameter history, which he can flip through page by page to see how the numbers have changed over time. Because he has so many tanks, each page is filled with data from just that day's worth of testing, which he told me takes almost 3 hours.
We joked around about this and that throughout the visit. He reminds me of the LFS owner nearest my home, who opens up brand new items to use in the tank rather than locate one already in use. When he told me the tank's temperature that day, I was shocked. I could see a thermometer lying on the substrate growing a healthy amount of coralline algae, and rather than getting his or my arm wet, he just opened up a brand new package and placed a new themometer in the tank. :lol: Btw, Chuck is tall and can reach and see anything. I'm either on my tippytoes or grabbing a bucket to get up high enough to do anything on his tank. The water temperature was perfect, btw. It was just a false reading from a tool he uses. Chuck, you can soak that old thermometer in some water and vinegar and it'll look brand new the next day. Same with feeding clips, etc. The suction cups don't need to be soaked. I think it might even make them less pliable perhaps.
The person you'll want to PM about your denitrifier is skydancer (Alex). If you need his phone number, let me know.
His refugium is now going to run on reverse lighting via the Reefkeeper, and he'll be harvesting macro algae from there more frequently. I noticed on the webcam last night that it was on. :thumbsup:
Chuck - Did the tank seem brighter to you yesterday with the lenses clean? Or did it just blind you?
I love that your coffee maker is under the tank. :lol: So convenient!