Alk and SPS

[Big E]

I never understood why people need to run kalk to keep their ph up. I run my effluent ph at 7.0-7.1 on my reactor. It melts my arm media & my ph doesn't drop in the tank.

That along with water changes keeps my ph stable.

 

[old salty]

<a href=showthread.php?s=&postid=8048716#post8048716 target=_blank>Originally posted</a> by Reefflections
Old Salty,what type of needle valve are you actually using?

It's a Clippard; 80 threads per inch. They're made right here in Cincinnati.

 

[Reefflections]

Jdieck,
Sorry it was late for me last night and had to get off.You even wrote more for me to read,and one thing did stood out here.My check valve Mmmm....Well to tell you that's is something for me to look at all.When I got my new reactor,tried to recycle some of the old parts from it.This check valve did come off my old Korallin reactor,it's a plastic version.And it's never been replaced.That's my fault there,knowing nothing last forever.So see if I can track down the one you mentioned here.
But in the mean time I did raise the PSI from where it was at.I kicked it up to 20 PSI and will go from there.Will wait a few hours now,and see what test are showing.Have to take this really slow,and see where I stand.Glad to have you out there,to get me where I want to be,as for good PH and a low Alk.Well be in touch.
Many thanks for your time here !

 

[Reefflections]

Oh yes forgot to mention to you.I have a new Pinpoint at it's been adjusted.And yes that's a life saver when it comes to a reactor.Also wanted to say here using M3 gauges also.

 

[TexasTodd]

Alk 3.8-4.2 Meq/L
Ca 380-420
1.026
PH 8.31-8.35 ish.
Low level of kalk in 24/7 drip from ReefFiller pump.
Reef Fanatic regulator (great!)
80 bubbles per minute, 50 ml per minute effluent output, 6.8-6.9 ph on output.

Bare Bottom 215 full SPS tank with about 300 total gallons.

My ph use to be much lower.....when I had a sand bed.

Todd

 

[jdieck]

<a href=showthread.php?s=&postid=8050339#post8050339 target=_blank>Originally posted</a> by Reefflections
Oh yes forgot to mention to you.I have a new Pinpoint at it's been adjusted.And yes that's a life saver when it comes to a reactor.Also wanted to say here using M3 gauges also.

:thumbsup:

 

[jdieck]

<a href=showthread.php?s=&postid=8049113#post8049113 target=_blank>Originally posted</a> by Big E
I never understood why people need to run kalk to keep their ph up. I run my effluent ph at 7.0-7.1 on my reactor. It melts my arm media & my ph doesn't drop in the tank.

That along with water changes keeps my ph stable.

It depends much in the tank operating parameters. Many tanks run naturally at lower PH depending on a combination of the CO2 cycle by photosintesis and the concentration of CO2 in the tanks surounding air. In these cases adding a Calcium reactor will lower the PH even more.
To make things worst many tanks with high consumption of Calcium and Alkalinity require getting as much as possible out of the reactor thus having to run it at an effluent PH of 6.5.
So all these are a combination that works towards puching the PH down. Kalk dripping specially at night and sometimes tied with reverse photoperiod in a refugium helps revert this trend.