Pros vs cons: Dosers vs. Calcium reactors
Hello all...I am at the point, with my full sps reef, that i need to make a decision on either dosing or a calcium reactor....I have a total system water volume of 160 gallons...as stated above...I have 95% sps and a few lps frags/colonies.....what are your favorite techniques, brands, supplements? Opinions good or bad....thx for any and all help with this....
Conan |
Do a search in the SPS forum - there's tons on this subject...
Everyone seems to like Geo for Ca Rx, and general advise is to invest in your regulator (and in some cases a peristaltic pump). I run a GHL doser Ca/Alk/mag and I like it just fine. |
I also run a doser, but for tanks over 120 you're dosing demands will be pretty high. A broad generalization, but reactor for larger tanks makes more sense.
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I chose a calcium reactor because I like the long term nature of it. I know if I had to mix supplements every couple weeks I'd get lazy and put it off.
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Reactors have a very high up front cost but pay for themselves in 3-4 years depending on how much 2 part you end up needing. Some people dose 100mL a day and when you're doing that you should seriously consider a reactor.
If you watch this, Dave at VividAquariums explains why his store only uses Dosing Pumps now. http://www.youtube.com/watch?v=U9yFdBnY-xA I personally dose for 3 reasons: 1. I can split dosing into as many or as little dosing sessions as I like via my apex controller. 2. I can easily increase or decrease dosing amounts by increasing or decreasing frequency or time I dose. 3. Calcium reactors can take a lot of "fiddling with." This was the big "NO" for me. I have never owned a calcium reactor but I have heard stories from local reefers about how much they have to play with their reactors. I believe in the acronym "KISS" (keep it simple stupid). Watch the video, you'll see what I'm talking about. |
I have done both. 2 part is easier and makes more sense. Calcium reactors are more fun to play with and once dialed in are awesome!
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I ditched my Ca Rx on my 450g after feeling like I twiddle with settings way too often. Too many independent parts you have to rely on. I went on a 2 week vacation last year and as Murphy's Law would predict, my CO2 ran out on something like Day 2. My tank sitters wouldn't have noticed that. Came back to most of my coral near-dead from an Alk crash. Dosing with a peristaltic pump for each of Ca and Alk is so much more simple ("KISS" as stated above"). |
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But in all fairness, really anything could go wrong. Your doser pump could break down or something with the two-part. I have used a dosing pump for years, on two different tanks, using the BRS two-part solutions. On my first tank i was always fiddling with it. I could never get the balance right. I my current tank, I learned a bit more and have gotten things pretty stable. But I just switched from two-part to a reactor because I was dumping 300ml of solution into my 200g tank every day. Every 12 days or so I had to mix up another gallon of both alk and calc. So there is the monetary aspect, and then i figured the bonus would be the extra trace elements that get added to the tank along with the alk and calc when using the reactor. It has taken a few days to break in and tune but it looks like my levels have stabilized and alk is even starting to rise a little. Even with two-part I had to adjust the dose now and then to adjust for more or less uptake. With either dosing or a reactor, you need to test at least weekly. Now instead of punching in a number on my computer, i will just need to make a bubble count adjustment. And it's taking care of both Alk and Calc at the same time. So is there a way to tell how much CO2 is left in the tank or when it's starting to get low? I would think that after you've gone through 2-3 tanks you would have a general idea of how long it lasts but some kind of gauge or something would be nice. |
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Nonetheless, I do see where arguments on both sides can be made. Quote:
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By the time the pressure gauge om a CO2 tank drops, that's pretty much the end of the CO2. It's my understanding the only easy way to tell how much CO2 is left is to weigh the tank.
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Murphy is always looking to make an appearance. |
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I am leaning towards the calc reactor because I am currently dosing 90 ml of alk and calc per day....I am looking for ease....as well as reliability....thx everyone for your comments...please keepnthem coming...I am definitely learning a lot from you guys....
Conan |
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