My issue with the return pump was that the drip rate would drop off over a matter of a week or so. Many here will agree that these bad boys are not only good at maintaining Ca/Alk, but they can quickly get away from you and shoot your Ca/alk through the roof during the initial setup. John, I think you should be fine running 24x7. I would like to be running the correct tubing though. Mine whines a bit, and the rollers move around a little, but it's in the basement, so it doesn't really phase me. Thank God my stand is sound deadened because I would hate to hear this thing all the time. I use the same pump as Ewan and others and mine is louder than any other pump I have in the stand. This media is very forgiving and I would have turned this stuff to mush had I been running ARM. This thing is really efficent and I had to fine tune it a ton before I realized that if you want to run your peri pump slow you have to really cut those bubbles down. By the way, when I switched it I let the peri pump run and the co2 pump run with no drip for 6 days and finallty got no bubbles. I know it can be done the other way and I am not saying it will cause a leak, I just wanted to mention that for people who want to put it in a short cabinet or learn from my experience. I like the idea of negative pressure on those 2 big soft o-rings on this unit. No matter were the effluent tip is it pumps the exact same drip. Once I changed the peri pump to drawing water out this problem was solved. With the water being pushed through the reactor the flow was very inconsistent depending on were I had the drip cup do to the back pressure. Before I set up the ph monitor as described on this thread I was using a drip cup to check effluent. This maybe good information for someone who has height restrictions like I do. Now it will work both ways but in my stand I cannot go above the top of the reactor. I think this is wrong for my setup after giving both a good long try. I de-gas my effluent because I initally set it up with the peri pump pushing the water in. As I have read through this thread, you start to think this thing is a lot more difficult than it actually is. I run the peri pump at 4.50 or 45ml and approx. I do have a controller and it is set to turn of when the effluent is 6.3. I only have a few SPS frags and a crocea clam in this tank and I am able to run the co2 running the co2 24/7, sort of. There is some good dialog in the first 4-5 pages about overcoming negative pressure. Without consistancy, the benefits of a reactor cannot be employed. Water cannot backsiphon.Ī peri pump vastly simplifies operation because the effluent rate will remain constant. With a peristaltic pump, a siphon cannot be created because the rollers isolate the water column. The idea is to simply not allow a siphon to be created. Peristaltic pumps are ideal in this situation.Īs far as getting the water from 1" above the reactor to the sump, the outflow can be placed in an 'open pipe' or 'waterslide'. The only form of displacement is from a suitable pump. Water in the reactor must overcome gravity to exit the reactor. This creates a *tiny* amount of backpressure on the reactor, and discourages the buildup of CO2. This is easily avoided by placing the outflow of the reactor 1" above the top of the reactor. It will readily take advantage of the negative pressure produced by a siphon. As water will wish to seek it's own level, co2 will easily build up in the collection chamber. Because of this, having the effluent outflow below the top of the reactor will create a siphon. With the schuran it is not recommended to restrict the outflow, because it is not designed to run with any significant amout of backpressure. What should I look to get?Īlso do you guys think the JBJ regulator is better then the ReefGeek regulator? Which would you recommend? Please give me some advice on whether this will work as I am having difficulty finding a cole parmer pump used.Īlso what pH meters do you recommend for the pH mod? I have a pinpoint for the system pH but want to get a 2nd for the effluent. Will this pump work for the Schuran? Is the minimum of 34 mL/min slow enough? Seems like alot of people are running 50-80 mL/min but also most people have larger tanks that we do. This Schuran JS1 is getting set up on a 100 g with 40 gallon sump (120 gallons of water) that is a fresh setup that will be SPS dominated. The head that comes with this pump is the cole parmer easy load 77200-52 (min flow with the pump is 34 mL/min max flow 2900mL/min). It is the 7554-90 pump (min flow 1.2mL/min and max flow of 2900mL/min) pump also is variable speed 20-600 rpm. I am looking at a Cole Parmer peristaltic pump/head combo but not sure if it will work out not.
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