Good news it fits in your return pump section. How long the peroxide last is mainly governed by temperature however you should expect the peroxide to last approximately 4 weeks in the W.Just installed the model W. Just fits with two return pumps in the return chamber of the sump. Micro but bubbles at first as expected. Hoping for the best. Running 12% with two catalysts. Roughly how long before I can expect to see it float?
Well 90 minutes after putting it in I pulled it back out... My Zoanthids all started to retract along with a couple SPS (don't have many but they all did the same thing). Then I saw my ORP had dropped like a rock from 283 down to 200 in a matter of minutes. Guessing I need to dilute and maybe take a catalyst out?
Fish all look great just the few corals I have along with the ORP spooked me.
This is why it can be difficult to recommend an ideal % of peroxide and number of catalysts. So many variables from stocking level, filtration employed, feeding and so on.This redox drop is typical if you add pure peroxide into your aquarium without any catalyst reaction at all. It is a sign - IMO - that to much non-catalyzed peroxide was coming out into the aquarium. Just do as @atoll l mentioned above - maybe also only start with one oxydator.
The reason why this happens - IMO - is that peroxid is a dubble edged sword. It is a reduction when it lose one of its O atoms H2O2 -> H2O + O and an oxidation when its free O atom oxidize something else. When you add pure H2O2 into the water - it always start with a dip in ORP followed of a rise above the old ORP level. When using oxydators - it is - IMO - a sign that you use too strong solution or to many catalysts.
A couple of days ago - I add by mistake around 20 ml pure 12% peroxid into ny 300 L tank - here is the result
After some hours - it is normal again
Sincerely Lasse
You should be able to put the 2nd catalyst back in with 6% peroxide. Just keep an eye on all.well unfortunately my cleaner shrimp didn’t make it. Found him upside down this morning. Everything else as far as I can tell is fine. (Not sure about the pod population). Fish look very happy and coral all have opened back up.
I diluted the 12% down to 6% and took out one catalyst leaving just the one.
As soon as I put it back in there was a small rise this time before another drop in ORP. The drop was not nearly as severe and was followed by a steady climb. Seems as things have leveled out now.
I know this is an old thread, but can you speak to why you would not run a tank without one? There's a lot of conflicting information out there about them, but I'm always interested in simple solutions without power. It seems like a very elegant way to add O2 to the water....
Can you explain more about how they work and what the benefits are? I know you have a huge thread about peroxide dosing/algae control, but I'm interested in this device, except there is a lot of conflicting information about them, and very little information in general in the US. I keep a 10 gal nano AIO, no skimmer. Right now I run carbon, filter pad, marinepure balls, and I'm putting a little refugium in the middle chamber.
Part of any question like this is the concentration - and how you're dosing it. For example - an oxydator releases H2O2 very slowly. The standard )non-oxydator) H2O2 dose that I see is 1 ml per 10 gallons. I have seen threads where 10x this amount is used. If you used the low dose - in a sump - I cannot see it harming shrimp or anything else. After all - almost immediately - its converted to Water and Oxygen. If you dose it directly into the tank all at once - my guess unless you're using a high dose - there would be no problem (and even then).
They work by putting 2 catalysts pellets in a closed system with H2O2. The catalyst causes H2O2 --> Water and oxygen. The oxygen is released into the tank. It is my understanding that H2O2 itself is not added to the tank water. Though - I imagine other oxygen species may be released and quickly degraded in very low quantities as well
Can I ask what conflicting information you have read as I am sure I can clear that up for you? I have been using Oxydators more years than many have lived so far that are on here.
Simple answer yes and you could just add more catalysts which for all intensive purpose is like adding a higher concentration of peroxide if you want to. And I would advise you do.
Thanks for the reply. How many catalyst would you recommend, 3 or 4?
I would suggest 4 with 3% peroxide and possibly more. However they 4 first.
