Another AquaC Remora Question

[yeldarbj]

I've been running my AquaC Remora skimmer on my 65g tank for about 4 months now, so my breakin period should be long gone. It is fully stocked fish-wise with some corals (softies & LPS). All water parameters are in check with the exception of a little nitrate (10-20 ppm).

I'm only getting about 1-2 tablespoons of skim per week and it's set to the wettest setting. I had been running a cannister filter in addition to the skimmer with mechanical and chemical filtration. I removed all of the mechanical filtration (foam pads) several weeks ago to see if it would improve the skimmer output. No change. Last week I removed all chemical media (Purigen & Chemipure carbon) to see if that would help my Remora produce more, but still no increase in skimmate.

Any suggestions?

I'm about ready to load up the cannister again because at least it was collecting stuff and my water was much cleaner.

Do I need to send the skimmer back to AquaC to have them check it out? I've been in touch with their customer service (which is outstanding by the way). They said I could send it to them for inspection.

 

[scooter21]

What pump are you using?

-Scott-

 

[yeldarbj]

MJ 1200 and using the skimmer box.

 

[pjf]

In the Same Boat

In the Same Boat

yeldarbj,

Please keep us posted regarding the inspection of your Remora by AquaC.

I have a similar setup as yours (Remora, MJ1200, skimmer box). At the wettest setting (o-ring removed), I have no more skimmate than you. I have not had a response from AquaC so I am very interested in finding out what is wrong with many of the Remora skimmers.

It is frustrating to hear how other users of these skimmers are having such luck and yet be one of the few with a skimmer that doesn't seem to work.

BTW, have you checked or cleaned the injector in your skimmer with the supplied brush?

Thanks!

 

[Sk8r]

My Urchin goes like crazy with phosban in the sump---and the o-ring set to 1" from the top. I did find it skims a lot better with the hose connected from the pump to the skimmer---darned thing fell off this week.

I'm told the brush needs to be used about 2x a year under ordinary circumstances, and another of my damp discoveries---turn off the pump before you undo that little nylon screw! and hang onto the screw when you undo it---you have to take the whole rig out if you drop it into the guts...

Maintenance on these is so easy, except for the little futzes! I have a love-hate relationship with mine, on a 52g, and also wish it had a bigger top.

 

[mikeosoft]

If your water parameters are staying steadily in check I wouldn't be too worried.

If there's nothing to skim then there's nothing to skim.

Now, if you start getting huge nutrient spikes and it's still not pulling much out, you might need to look into it.

 

[frazier]

mine goes crazy on a 30g... the O ring is at the drain and I still have to empty it eod

 

[dmo]

I had contacted AquaC about excessive microbubbles coming out of my Remora (mj1200), and sent it in for inspection (excellent service btw). This skimmer did fairly well, I got about half the collection cup full of tea colored skimmate every day.

They sent me a new remora, and I have been fairly disappointed with it since. The microbubble issue is a tiny bit better, but the skimmate I get isn't as good. I get black watery skimmate now, but only around 1/8" per day. It doesn't matter how I adjust the cup, the amount or quality of the skimmate doesn't change.

 

[yeldarbj]

I've cleaned the injector several times, most recently about 2 weeks ago. I can't tell any difference before or after.

dmo, that's very interesting that you have had two different results with two skimmers. Were there any other changes to the tank in between skimmers.

I just can't imagine that there are not enough nutrients to skim out. I've got cyano growing and nitrates building (but 0 phosphate). I currently have no other filtration on the tank, no sump, no refugium, just live rock, power heads, a UV, and an empty cannister. I've got 5 fish (~12 inches total) that get fed frozen food once a day.

 

[pjf]

<a href=showthread.php?s=&postid=8863484#post8863484 target=_blank>Originally posted</a> by yeldarbj
I just can't imagine that there are not enough nutrients to skim out. I've got cyano growing and nitrates building (but 0 phosphate). I currently have no other filtration on the tank, no sump, no refugium, just live rock, power heads, a UV, and an empty cannister. I've got 5 fish (~12 inches total) that get fed frozen food once a day.

I agree with yeldarbj.

I skimmed the same two tablespoons a week with the Remora. I received the same comments about not enough nutrients to skim out. After getting sick of the cyano growing and the nitrates building, I finally purchased a Tunze 9010 and am now pulling 100ml of skim daily.

dmo's post indicates that there are variations between Remoras. He's had two Remoras with different results.

It seems that Remora owners either love or hate their skimmers. It will be interesting to find out what is the key variable that determines the difference between a Remora that owners are happy with and a Remora that is not productive.

 

[yeldarbj]

PJF, how do you like the Tunze 9010? Do you run it in the tank or in a sump? How quiet is it? I had previously looked at the 9005 but haven't heard much about them.

If I choose to replace the Remora I need something that is low-profile HOT (like the Remora) or in tank like the Tunze. I'll send the Remora back first though and see what AquaC has to say about it. I'm going to let it run at least another week without any other filtration though. I just did a 20% water change yesterday, so I'm curious to see what happens with the nitrates this week.

The water is definitely "dirtier" than when I had the cannister going with foam cartridges and chemical media. My only other possibility is that the Purigen and Chemipure were taking so much organic material out that there was not much to skim. The Chemipure had been in for two months and the Purigen for about 6 weeks. I find it hard to believe that they could still be pulling that much out of the water.

 

[pjf]

Yeldarbj,

My Tunze 9010 sits in the sump formerly occupied by my Remora pump and skimmer box. It is quiet and it out-skimmed my Remora from day one.

Originally, I configured the Tunze for “in-tank” mode which means the water level must be at the “blue line” painted on the skimmer. Unfortunately, the magnet holder holds the neck of the Tunze against my plastic tank rim 1-inch higher than optimal. My notes show that during the first week, it only collected 300ml. The following week the rate nearly doubled.

To improve performance, I used the “in-sump” kit that comes with the Tunze 9010 (not the 9005). This raises the internal water level of the Tunze to the optimal level despite the lower outside water level. In this mode, the Tunze must sit on a platform so the solid plate on the bottom can seal against leakage. Now I am getting 100ml of skimmate daily.

You can adjust the wetness of the skim with an air adjustment valve. Until I figure out how to use this valve, I have it set to full which results in collecting wet green tea.

The con to the Tunze 9010 is that it is factory made with thin plastic. It does not have the beefy acrylic body and collection cup of the Remora. It appears fragile and you cannot throw it around. The pro to the Tunze 9010 is that it is not subject to hand-crafted variations that may impact its performance from unit to unit.

I am still new to this. The Tunze forum in Reef Central is fantastic with Mr. Roger Vitko of Tunze personally answering every thread. There is no lack of support.

I have another theory as to why my Remora doesn’t collect enough skimmate. I have a very high turbulent flow in my sump (~800gph). There are a lot of bubbles in the overflow that bypass the skimmer and carry proteins to the next refugium compartment. I noticed that these bubbles rarely made it into my Remora’s skimmer box.

Do find out from AquaC what is wrong with some of the Remora units. Sorry to steal your thread but unless I find out what is wrong, I plan to throw my Remora away rather than sell it to some unsuspecting buyer.

 

[dmo]

<a href=showthread.php?s=&postid=8863484#post8863484 target=_blank>Originally posted</a> by yeldarbj
dmo, that's very interesting that you have had two different results with two skimmers. Were there any other changes to the tank in between skimmers.

There were no significant changes to the tank, or my routine between skimmers. The tank was without a skimmer for over a week, so I did throw in an extra water change in between.

This all happened in August. I'm now having nitrate problems, and I am mostly sure its because of insufficient skimming.

 

[pjf]

dmo,

Was AquaC able to tell you what is the difference between your two Remoras?

 

[dmo]

Honestly, I never asked, though I probably should have. At the time I decided to wait awhile for it to break in, and in the meantime I set up a sump and started making plans for a new skimmer.

 

[frenchie]

i have remora pro hang on skimmer and it came with rio 1400 which produced good during breakin period than gradually slowed down so i added a rio 2500 and now i empty cup every2 to 3 days. Microbubbles are an issue with remora and other hang on skimmer unless you use bubble traps like surface skimmer box for remoras. But my bigger pump wouldn't fit in skimmer box so i use a in tank fuge so micro bubbles stay out of tank and in fuge only. Put a bigger pump on your remora and it will really kick butt.

 

[Grey Reefer]

Well last night I got a somewhat decent skimmate , but still very wet. Looked like some narly brown tea. I am going to steer people away from AquaC though. I have had a Precision Marine Skimmer before and will go that route when I feel the Remora is completely usless. I might try Tunze though because of the support here at RC. Deltec is also making a HOT that will fit larger Nanos, but those cost $$$$, all good skimmers. Anyone who has had a decent skimmer would laugh at an AquaC. I guess I just joined the I hate AquaC group

 

[Brisc0]

I have a friend that uses the Remora pro and loves it. He fills the cup weekly. I use an AquaC for my setup as well although its a big 240 model and love it as well. I think IME the main issue with AquaC is that they are a bit more advanced to setup than most other skimmers, but if you get them rocking no other brand can touch them. I was about to break my 240 over my knee when I first set it up because it made nothing but simply raising it one inch further out of the water gives me about a liter of skimmate a week now.

 

[dmo]

I have no experience with the bigger AquaC skimmers, but when it comes to the Remora, there is no advanced setup required... or even possible.

 

[pjf]

<a href=showthread.php?s=&postid=8870243#post8870243 target=_blank>Originally posted</a> by Brisc0
I have a friend that uses the Remora pro and loves it. He fills the cup weekly. I use an AquaC for my setup as well although its a big 240 model and love it as well. I think IME the main issue with AquaC is that they are a bit more advanced to setup than most other skimmers, but if you get them rocking no other brand can touch them. I was about to break my 240 over my knee when I first set it up because it made nothing but simply raising it one inch further out of the water gives me about a liter of skimmate a week now.

My understanding is that your AquaC EV-240 is not a hang-on skimmer but was installed as an in-sump skimmer. Your EV-240 manual clearly explains how to use platforms to raise or lower the EV-240 to find the proper water level.

Would you please explain to us how to properly adjust the operations of our hang-on AquaC Remora units?

We would very much appreciate your assistance. Thanks in advance.