Biopellet Reactor: Tuning

gdemos

New member
Hoping I can get a solution on tuning my biopellet reactor.
Day 0 i had GFO inline at undetectable PO4 (Hanna ULR) and Nitrate ranged from 10-25ppm Salifert.

Reactor has been running for 9 weeks.
Parameters Currently: .29 PO4, 25+ppm NO3

I have increased bioload with new fish and have been feeding heavier; but would have expected biopellets to have 'kicked in' by now.

Day 0 i ran the effluent wide open, so flow was fairly significant.
Currently scaled back to 250 Gallons Per Day and increased turbulence per manufacturers' personal suggestion and i've been running it this way for 10 days, still no sign of denitrification etc.

Willing to go another week or so to see if it kicks i suppose.
here's a video:
https://www.youtube.com/watch?v=xBNmMIQujhw

Thanks,
-Greg
 
total system volume 275g. currently Fish Only, goal for all Acro.
Fish list is extensive:
(9) Caryberi Anthias
(4) Bimaculatus
(7) Bartlett
(5) Yellow Tang
(1) Powder Blue
(1) Powder Brown
(1) Yellow Belly Hippo
(1) Chevron Tang
(1) Flame Angel
(1) Goldflake
(1) Matted Filefish
(1) Mandarin
(2) Percula

Feeding 18 cubes daily misys/spirulna over 3 feedings.
 
Because you are phosphate limited the bacteria will not increase despite the addition of carbon. Take the Gfo off line and feed extra flake for awhile
 
I'm running a RD BP reactor too. I just set it up a month ago. I was always low nutrient from Zeovit before, but the pellets are keeping me at low levels. .02 phosphates and 1 nitrate. Take the GFO out. You need some phosphate for the bacteria to consume nitrate and vice versa.
 
Eventhough I ran GFO up until the day I installed the BP clearly phosphate has increased since then. I feed heavily 15-18 cubes mix of misys and spirulina daily. Phosphate is very much present so I doubt it has anything to do with that

I am going to do an experiment by hooking up an air compressor to my skimmer
 
I am still north of 25ppm Nitrate. I am running as turbulent as possible (so as not to clog recirc strainer too much); and flow through the reactor is 250 gallons per day as recommended by RD. This is week 2 of this approach.

RD had suggested perhaps that the skimmer is not pulling enough skimmate or not running efficiently.
I tend to agree that I'd like to see a greater volume of skimmate, but not so much that salinity becomes unstable.
I will yank the skimmer and clean thoroughly, it has been 2 months since I cleaned the skimmer pump, impeller, cone, etc.
Usually 2 times weekly sometimes more I am removing the collection cup and cleaning/drying thoroughly, at which point I usually wipe the cone clean as well.

I do not have an air flow meter, but CoralVue states that the SRO 6000SSS pump draws 2100 lph of air.
I am going to attach a 70 lpm air pump to push air to the silencer and see what this does for efficiency.
I am pretty sure that the skimmer can handle this given the size of the pump, cone, and all plumbing.

At present the air intake is coming from an air conditioned room outside (low humidity, etc.) of the 'sump room'.

So while I agree that the skimmer could be running better and am taking steps to maximize efficiency, I am concerned that this is not the only issue.
thoughts?

Techinical Specs
Body Size: 12?
Footprint: 15? x 12.5?
Neck Size: 7?
Total Height: 25?
Output Size: 1.5"
Output Height: 6.2?
Note: Recommended Sump Water Depth: 6.5-7""

Pump Information
Bubble Blaster 5000 Pinwheel Pump
Wattage: 45w
Air Draw: 2,100 lph / 74 SCFH*
Water Draw: 1,800 lph / 480 GPH*
*Air and water results will vary depending on aquarium setup
 
Eventhough I ran GFO up until the day I installed the BP clearly phosphate has increased since then. I feed heavily 15-18 cubes mix of misys and spirulina daily. Phosphate is very much present so I doubt it has anything to do with that

I am going to do an experiment by hooking up an air compressor to my skimmer
It could be you are skimming out useful bacteria as fast as it is being produced

Btw
Mysis is very low in phosphates. This is why I suggested adding some flake food which is very high in phosphates
 
well my experiment of hooking an air pump to the skimmer was not successful.

first pump was underpowered at 20 lpm, although it ran quietly
second pump was a 70 lpm unit that was way too loud.
plumbed directly, the 70 lpm unit overpowered the bubbleblaster 5000.
plumbed down to 1/4" and back up to 3/8" it was underpowered.

my next course of action will be to raise the skimmer in sump level.
although I prefer to keep the water volume higher on the skimmer this way the pump is not working as hard.

common sense points to the skimmer as the culprit; yet I also feel that the amount or type of pellets (RD NOPO) are not effective.

I don't really follow you in saying in your note - do you mean to say I am overskimming?
 
and I do add dry food every now and then. anthias go nuts for it. I dont' think at all that it is an underfeeding issue.
 
It can take up to 6 months for the biopellets to kick in iirc.

I use a NextReef reactor so no adjustments for me, I just run enough water to aggressively tumble them and feed heavily.

Nitrates are low but I have a ton of rock and phosphates are a bit high at the moment but I was able to feed an insane amount on my system and keep them at close to zero when it was fully stocked.
 
Ok that's news to me Mark I figured 6-8 weeks tops. And that is indeed my intent: feed like crazy. On that note I think I will just let it ride keeping all settings as they are and see what more time brings. I have time since this is still fish only as acros grow out in my frag tank
 
When I added them to my mature reef it took less than a week but this time around was much slower. Several months. Likely due to the amount of nutrients the tank was able to process.
 
Although this BP reactor is not on a mature reef as yours was when you initiated your BPR first time around (sounds like this is your second go at it) it is on a 2 yr old heavily stocked FOWLR system. My high levels of NO3 (25ppm+) and PO4 (.29) I thought would be sufficient enough to feed the pellets and kick them into consumption. I know that adding other bacteria is possible with MB7 and the like but I don't get the point of it given that I have a 'high nutrient' system from the start.
 
Although this BP reactor is not on a mature reef as yours was when you initiated your BPR first time around (sounds like this is your second go at it) it is on a 2 yr old heavily stocked FOWLR system. My high levels of NO3 (25ppm+) and PO4 (.29) I thought would be sufficient enough to feed the pellets and kick them into consumption. I know that adding other bacteria is possible with MB7 and the like but I don't get the point of it given that I have a 'high nutrient' system from the start.
Ok.. Lol, first thing.. nice setup with your plumbing! Next, your system is obviously not nutrient deficient, so as you know, that's out the window. The next thing is that I run the 135 reactor(2nd time) on my 65 gallon system(ran it on my 110 previously).

Just looking at your video, I am with you in saying that your skimmer, something's not right if that's as wet as you can get it. I just decided long ago, since I'm running dynamics, I'm going to run "all" dynamics. I haven't had, or let me rephrase: I "have" had phenomenal results ever since.. I am running 18oz of the pellets in my 135 reactor. The system had only been set up for 2 months and I didn't start the pellets until 2 weeks after the system was up. So my system is very immature also. And my nitrate is, and has been at 0 for at least 2 weeks. But.. I have never had a problem kicking the pellets to go in about 6 weeks at the very latest. But then,I always started them with bacteria..

I soak the pellets overnight in salt water and mb7.And your question was why the added bacteria: well, you really want to get them on the surface as fast add you can. Yes, there is natural in the system, but think of the reactor as it's own little bacteria sees pool. You need the concentration up in there.. That's where it's important for the pellets..

But I don't think the problem is completely the pellets. I think it's part of it, from the standpoint that they haven't kicked in, and because your skimmer isn't performing for you, it's throwing doofus from the pellets, into the system, creating nitrate and phosphate.. Yada, yada..

So what do you do at this point? Well, what I would do is first, put the gfo and phosphate reduction back on. Keep your system up and running fully until it's ready to pull the extra off. Yours isn't ready yet imho. Next, because your running a recirc, you have a lot of flexibility. I like your tumble rate. But, you want to reduce your process rate(top blue) until the skimmer issue is resolved. Your gonna be dead in the water with much more than the pellets of you don't get that resolved. And during the break in of those, I only ever run enough water through it, to just get water through it and not be stagnant(you bought a great reactor, so use it to your advantage). Then, just for now, because your skimmer is giving grief, slow down the quantity of feeding or change types. It's only do much you can do, but slow the accumulation of nutrient. Then, bacteria suppliment for a couple weeks. It will jump start our either speed up your pellets. And you will certainly know when things are ready in the reactor. There is a drastic change in the skim.

But one thing you "have" to do is get either that skimmer working to where you can make a semi transparent tea skim, or simply buy another skimmer. If you go the latter, save yourself headache and just get a dynamics. All of the specs in the world honestly fly out the window with practical application.
 
Ok that's news to me Mark I figured 6-8 weeks tops. And that is indeed my intent: feed like crazy. On that note I think I will just let it ride keeping all settings as they are and see what more time brings. I have time since this is still fish only as acros grow out in my frag tank

If that is the case then you are limited in either phosphates or nitrates
The function of the pellets is to add a carbon source to the system not be its own generator of bacteria. You need to keep those pellets tumbling.
 
DamonG, 007, the , thanks for the response. I raised the skimmer in the sump. I had water level at 11" now at 7" as SRO recommends. Also took the opportunity to thoroughly clean the SRO6000sss. Which is no easy feat. Just wanted to eliminate sources of error. Nothing dramatic yet.

The RD Skimmers sound nice I like the true recirculation but don't like the price and multiple pumps to give recirc. Maybe Santa will be good

Meanwhile I have been speaking with Jeff at RD for his thoughts. Saying it should be stripping po4 and no3 by now and his flow rate of 250 gpd as suggested and high turbulence is due largely to the fact that I went oversized. He also suggested bacteria dosing should not be necessary (but I may try it if no luck in a couple more weeks). Along the lines you mention Damon although my system is elevated nutrient, local to the reactor itself could be a different story.
 
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