![]() ![]() There is just no build up that I can see that is causing this problem and if it were a build up issue I just don't understand why one pump would have it, to the point it shuts down and the other is fine. If you will recall one of the 6100 pumps (the one on the left side of my tank) keeps setting the alarm and I have now taken the pump apart 3 times since you and I spoke. We spoke on the phone a couple of weeks ago about my TZTS24 system which I received the on. In this photo we see the hole in the center of the drive unit, it is critical that this be thoroughly cleaned to get the full service life, also be sure the well the drive unit is inside is also cleaned, just use vinegar and a brush for this. This photo gives a detail of the 7400.610 o ring, this is the only difference between a 6080.60 and a 6100.60, it restricts the movement of the brakes which are not required on the electronic pumps. It should be cleaned with vinegar and a brush. In this photo we see the drive unit fully dissassembled. If it is stuck to the rotor, gently pry it off with a slotted screwdriver. The bearing can be removed with a screw (see manual) a pair of very small needle nose, or a pick if it is at the bottom of the impeller well. In this photo we see the upper bearing, this part is the most frequent cause of a problem, it can become cemented to the magnetic rotor with lime, the magnet should spin freely on the bearing. Here we see the complete assembled unit removed, the bush bearing is not shown in the photo, the bush bearing is the collar that is around the impeller well. This drive unit is the same as the 6080.60 used on the current 60 pumps with the exception of the 7400.610 o ring. This drive unit is used on all 6000/61 and wavebox pumps made prior to January, 2006. We will start with the 6100.60 drive unit. Marc Levenson- Melev here on RC, sent me some much better photos and I am updating this thread using his photos. Some of you may recognize that this thread was posted earlier. Now, lets get down to the pump and cleaning it. At the coral polyp the xoozanthellae remove CO2 from the water by photosynthetic activity, this does the same thing, the pH increase and CaCO3 precipitates and is added to the skeleton. Pumps vary in this effect, most pump have an internal temp of 4C over ambient, a Stream is about 1C. Inside a pump we have both heat and vacuum, by Boyles law we decrease the solubility of CO2 and the pH increase in a local zone this precipitates CaCO3. Why do pumps become jammed with Calcium? The answer is simple and it may surprise you to learn the same thing happens in your pumps as happens at the coral polyp when skeleton is laid down for growth. Just work on balance and stability, nature has more experience than all of us. They do grow fast enough and the idea of the Optimum Aquarium from Dupla applies to all aquaria, you will always have a limiting factor, by raisng the calcium you only changed it to another element be it light, flow, KH etc. Do my corals grow as fast as 500 ppm- no. ![]() By doing this my pumps only need cleaning every 6-9 months- 9 months is pushing it and I wouldn't recommend it. A high KH has also increased the availability of the Ca. I run a slightly higher KH because the KH is more critical to the stability of a closed environment and corallin algae responds favorably and many green algaes negatively to this higher KH. ![]() I have the advantage as a hobbyist of modern technology keeping the levels reasonably constant as well. ![]() Why do I do it this way and not keep higher Calcium levels? First of, the reefs are about 380ppm Calcium with a KH of 8, they have the advantage of trillions of gallons of this solution passing over them. For salt I use hW Marinemix (hW Meersalz in Europe). I keep the KH at 12- I use superbuffer dKH from Kent if necessary. In my personal opinion I keep my tanks at about 380-400 ppm Calcium, I don't use magnesium or strontium supplements (any supplements except kalk and a calcium reactor for that matter). The pumps vary in the frequency they need cleaning with the habitat they are used in. The electronic Streams have a safety feature that sound an audible alarm when the pump is jammed. I hope this thread will answer the most FAQ. ![]()
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