More FAQs about Ozonizer
Related Articles: Physical
Related FAQs: Ozone 1, Ozone 2, RedOx, & FAQs on
Ozone: Rationale, System/Selection, Application/Installation, Measuring, Maintenance/Repair, &
Marine Test Gear 1, Marine Test Gear 2, Marine Water Quality,
Marine Water Quality
2, Marine Water Quality
I have a Pinpoint ORP probe that cost
me quite a bit of money and i don't want to damage it by
cleaning it. Can i use the same product that i use to clean
my pH probe, which it think is a strong acid, or can i use
vinegar -- what would you suggest and how often does it need to
Do i need to calibrate it when
i've cleaned it?
Thank you for your question Peter and
Richard for your referral. First off, I'd like to state that
I am a fan of PinPoints products, including their probes. These
are good hobbyist-grade kit, accurate and affordable, and will
give good long service given proper care. This being stated, the
probes themselves are the weakest link; requiring careful
handling and even daily inspection.
The User's Guide provided by
American Marine Inc. should be referred to and followed
explicitly. Pertinent notes include the need to keep the platinum
tip of the electrode moist (either in use immersed in water or
with solution in the covering cap). As stated, the probe
unit surface, platinum pin and reference junctions should be
cleaned every 3-4 weeks, using a wetted soft bristled toothbrush.
Though some folks use lukewarm mains water for rinsing, I splurge
and utilize the same reference solution (REDOX 400 Calibration
Fluid) as used for calibrating the probe. The unit does
indeed need to be checked for calibration every time it is
cleaned, and actually any time you suspect a mis-read; for
instance in the event of an anomalous reading.
Even given the best of care, the
manufacturer suggests an effective lifetime of their probes of 18
months. There is no way to home-service these
I have a new commercial reef setup. It's about 1400
gallons and had water in it for about 3 weeks. I put a Zoanthid
colony and a Pom Pom Xenia colony in it a few days after I got water in
<? Why would you do this? Neither appreciates a new setting; both are
The corals immediately showed signs of stress and since then the Zoas
have bleached out and the Xenia has remained shriveled never opened up.
Neither have died, but they look like they wish they were dead.
I used Seachem's Salinity salt. Alkalinity is 3.0 meq/l and PO4 is
.04 according to my Red Sea test kits. My S.G. has ranged from
1.023-1.026 (due to some plumbing errors and programming learning
curve). My pH has been very stable at 8.15 and temperature ranging
from 73-74. I'm using Neptune's Apex controller and probes which
have been calibrated to manufacturer specs. My ORP in my
main system is reading steady around 170.
<Strange... due to the exudations of just these two (probably small)
colonies? Something else here>
ORP in my RO/DI water is reading at 300, in my SW mixing tank it's
reading 200, and in my SW reservoir it's reading at 190. I've
spent hours reading about ORP, but frankly it's just a lot to grapple
with and doesn't seem to jive with my readings.
<Agreed... have you certified the probe is reading accurately? I would
check it against one or two standards>
I'm using an MRC skimmer, which is getting a surprising amount of
skim for the 2 tiny corals.
<? Again; what is going on here? Some other source of pollution. I would
place some pads of PolyFilter in the filter flow path; check for color>
The system is a frag unit,
<What is it constructed of? Has it had a good deal of solvent (like PVC)
used in it recently?>
so it has a lot of surface area (~200 ft/sq) and is in a pet store with
puppies so it gets a LOT of dust (like, store has to be professionally
dusted once a week) so I'm assuming that's where most of the protein is
coming from. I'm also running water through a reactor with filter
floss and a big bag of Seachem's Purigen.
Mysteries that you've hopefully already solved for me: A) Why do my
corals hate their lives? B) How do I interpret my ORP readings?
<Does this system have an ozonizer installed on it, a calcium reactor...
CO2 driven? Bob Fenner>
RE: Low ORP 2/23/14
Chose the Zoa and Pom Pom simply because that's what I had healthy frags
of, was avoiding a livestock order until I had healthy water. Is
it possible my guinea pigs just hate the "new setting"?
<Oh yes; for sure>
I assumed with no fish, no bioload to speak of, and a massive water volume
to dilute un-desirables... it would be a near ideal setting.
As to your other questions: Yes these two corals are quite small.
Re-Miscellaneous pollution. Yes, there was recently quite a bit of
solvent; the entire system has been plumbed within the last 60 days
using the expected arsenal of PVC cement, silicone sealants, etc.
The display tanks themselves are glass (our custom design, crafted by
DAS), but we re-purposed (thoroughly cleaned) barrels and totes for the
fuge, sump, bio filter that might have had residue from "accuslurry" or
whatever they were transporting. I also used quite a bit
<Mmm, don't use this... petroleum product. Look instead to silicone
lubes... as made for O-rings on pools, cameras>
to get the plumbing through all the Uniseals (which I have used safely in
fresh, but don't know if saltwater reacts chemically). I expected
that the Purigen (similar to PolyFilter I believe?)
<In some ways>
would remove miscellaneous chemicals, perhaps it is and hasn't had enough
time. Will add PolyFilter this week. Seems like chemicals
are likely and I should probably be pretty aggressive about eliminating
these unmeasurable, untestable, unknowns?
<Mmm; no; not really. There is a very wide/range of chemical properties
at work here... There are no "do all" chemical removing media>
Re-ORP accuracy: Neptune claims that their probe is
pre-calibrated and will never require calibration for the life of the
<What? No... do you/they have a reference that actually states this?
Unbelievable; or... at least to my awareness; impossible>
Do you recommend supplementing an additional probe or trying to calibrate
the one that I have?
<The latter for sure... Likely weekly if employed full/real time>
Lastly, there is no ozonizer currently, add one this week?
<Maybe... depends on what the folks are keeping, hope to achieve...
skimmer first, then O3, then dryer, then Ca reactor...>
Calcium reactor exists but has no media or C02 hooked up yet.
RE: Low ORP 2/23/14
Can you explain (or refer me to literature, if too complex or lengthy)
that explains biologically/chemically what transitions a tank from a
"new setting" to "old setting"?
<Wish I could... don't know that there is such>
I'm familiar with basics of the nitrogen cycle, but with 1400 gallons and
two tiny corals ammonia couldn't be present in any significant quantity
<Not much; no>
Temp, pH, alkalinity and SG are acceptable. What are the other key
<NO3 and HPO4 are necessary... as is some ferrous; other
Regarding calibrating the ORP probe:
3_2_web.pdf (page 26, first two lines). You calling BS on these
<... This: "Calibration of the AquaController III Pro is quite simple,
and should be checked at regular maintenance intervals to insure
accurate operation.".... is what is posted for the Conductivity probe...
not temperature... I don't know what they mean by "regular maintenance
intervals"... but again, I'd be checking weekly>
Regarding stocking plan and equipment, it's an 8 unit 5'x5'x8" centrally
filtered coral/frag display. No fish. It will contain the
full spectrum of corals you would expect to see in a retail environment
(insert allelopathy snipe here ;)). It's got a huge skimmer and
calcium reactor already. Could def add ozone, we talked about it
extensively but was left out due to indecision. Have never used
(nor heard of, honestly) a dryer,
<... see WWM re>
but brief research suggests it's a practical addition. With
sustainability in mind it only makes sense to spare no expense.
Keeping the system/livestock as healthy as possible is = to compassion,
fun and long term profit. I have been a 'conscientious marine
aquarist' for over a decade now, and trust your advice.
<Ahh; cheers, B>
RE: Low ORP
Edit/fix on my last message - I said page 26, was actually page 27.
Additionally, here is a copy/paste of the section I was referencing,
It is not necessary to calibrate the ORP probe of the AquaController III
Pro. It has been properly calibrated at the factory to maintain accurate
ORP readings for the lifetime of the controller. However, it is
possible to calibrate the probe if so desired"
<Interesting... and new/s to me>
They have a 'special' probe for ORP, the conductivity probe is used to
measure salinity. Will still calibrate as you advise, but wanted
to mention this lest I soil the chronicles of WWM with misleading
<Thank you, Bob Fenner>