Dosing

[Parker]

If you had the opportunity to do it all over again what method would you choose? I'm torn on which method to use. I have a PM Calc reactor set-up that I haven't brought on-line yet, but I'm really intrigued by the 2/3 part dosing methods and the simplicity they offer.

[Parker]

Whoops, should have put this in the polls section I guess..

[Delphinus]

I voted 3-part but IMO realistically 2-part and 3-part are the same thing. Big 3 being Ca, Alk and Mg .. you don't really have to dose Mg on a daily basis (or if you do it's some tiny amount compared to the other two). If you dose 2-part with something like Seachem "Reef Builder" and "Reef Advantage" (I forget which one is Ca and which one is Alk but that's what they are together), then you are already dosing Mg anyhow. If you use the Randy Holmes-Farley recipes then you have to dose Mg separately.

I dunno, Ca reactors still have their place but you said it yourself, you can't beat the simplicity of 2-part. (No CO2, no "dialing it in", no fussy regulators, etc.)

[whatcaneyedo]

For me there was quite a learning curve to get the Ca Reactor all figured out. But now that I've been running one for two years I'm pretty comfortable with them. Occationally I'll turn up the flow a bit after I've done some water testing but basically I dont touch mine for months at a time.

[Trigger Man]

I think I would do the 2 part dosing, the reactors are great as long as they are dialed in correctly, which means more work in the end.

[mark]

I voted dosing though have no problems with my reactor and they can be set and forget, but a dosing pumps with a built in controller (like here) seems interesting.

Not having run them but can see dosing being about work as a reactor; initially getting dialed-in then refilling the reservoirs. Can you just mix the solutions once (or need to be re-stirred), how often to replace the tubing, life of the motors? CO2 and aragonite easy to get an really not that pricey. Dosing mixes probably not that bad if going to littlesilvermax and making your own, but if getting into the balling methods?

[Snappy]

Originally Posted by Delphinus

I voted 3-part but IMO realistically 2-part and 3-part are the same thing. Big 3 being Ca, Alk and Mg .. you don't really have to dose Mg on a daily basis (or if you do it's some tiny amount compared to the other two). If you dose 2-part with something like Seachem "Reef Builder" and "Reef Advantage" (I forget which one is Ca and which one is Alk but that's what they are together), then you are already dosing Mg anyhow. If you use the Randy Holmes-Farley recipes then you have to dose Mg separately.

I dunno, Ca reactors still have their place but you said it yourself, you can't beat the simplicity of 2-part. (No CO2, no "dialing it in", no fussy regulators, etc.)

Mag should be dosed at approximately the same rate per week that alk & ca are dosed per day.
I dose about 1 liter of each ca & alk per day. I use Randy's 2 part recipe which as you mentioned is actually 3 part but it's just called two part. I also use recipe #2 because my ph is high enough already I don't need to turn the baking soda or sodium bicarbonate to "soda ash or sodium carbonate". I quite like it but can't honestly compare since I have never owned a ca reactor. (I voted 2 part)

[Lance]

Between the 225g and the 90g, I'm dosing 220ml Ca, 180ml alk and 30ml Mg per day of Randy's 2-part. I use a dosing pump for the bigger tank and dose manually on the 90g. It's quite simple this way and keeps the levels pretty constant at where I want them.

[Parker]

I'm going to go the dosing route to start and see how things go.

Where are you guys getting your chem from, are you using the DIY material (Arm & Hammer etc) or are you going with a commercial solution?