Ducting humid air outdoors

iReefer12

Well-Known Member
Review score
+0 /0 /-0
View Badges
Joined
Apr 22, 2012
Messages
520
Reaction score
329
Review score
+0 /0 /-0
Location
Boulder, CO
Join the movement!

Dan_P

2500 Club Member
Review score
+0 /0 /-0
View Badges
Joined
Sep 21, 2018
Messages
4,458
Reaction score
4,740
Review score
+0 /0 /-0
Im planning on adding one of these AC Infinity in line fans (https://acinfinity.com/hvac-home-ve...h-temperature-and-humidity-controller-6-inch/), will have an intake above the fish tank, and an exhaust to outside.

The AC infinity ducting is lined with Alluminum foil (https://acinfinity.com/hvac-home-ve...lexible-four-layer-ducting-25-ft-long-6-inch/), is there any concern of humid air from a saltwater tank corroding the Aluminum foil??
The only way for salt to reach the duct is by splashing. For example when bubbles pop, tiny droplets form and float around. These could be drawn up into the duct. Over time there will be some corrosion. Do you need to have the intake above the aquarium? Bathroom fans are mounted in the ceiling..
 
World Wide Corals
Tidal Gardens

SteveMM62Reef

Valuable Member
Review score
+0 /0 /-0
View Badges
Joined
Sep 21, 2020
Messages
1,167
Reaction score
716
Review score
+0 /0 /-0
Location
La Plata
If you are in an area with high humidity, that won’t work. Any air Exhausted outside will be replaced with humid air from outside. This will be leakage, and could damage the structure, include insulation, wall switches and receptacles, from condensation. You would need something like a Honeywell Ventilation System. The VNT5150H1000 runs around 1K There are other manufacturers, AprilAire is one. You will need one with a desiccant exchanger to deal with the humidity.
 
Corals.com

Malcontent

Well-Known Member
Review score
+0 /0 /-0
View Badges
Joined
Sep 20, 2018
Messages
926
Reaction score
925
Review score
+0 /0 /-0
If it becomes a problem, one option is a mist separator--basically, a series of baffles with sharp turns so water droplets collide with the walls but air passes through.
 

All_talk

Active Member
Review score
+0 /0 /-0
View Badges
Joined
Oct 8, 2019
Messages
168
Reaction score
145
Review score
+0 /0 /-0
Location
Thorp, WA
I would not expect too much trouble with a 2' gap, but your idea to use plastic ducting in the inlet side should mitigate it pretty well. One thing I have noticed is that salt spray tends to collect dust and build up a thick layer over time, could the fan be positioned were the intake tube could be replaced if necessary down the road? Maybe some sort of inlet filter at the ceiling?
 
World Wide Corals

All_talk

Active Member
Review score
+0 /0 /-0
View Badges
Joined
Oct 8, 2019
Messages
168
Reaction score
145
Review score
+0 /0 /-0
Location
Thorp, WA
I have a hvac duct in the ceiling above my tank with about 2-3’ of open space between it and the duct and the grill on it has started to corrode. So I’d say there is definitely a good possibility of corrosion on it.
You can't beat real experience, looks like some steps should be taken to not ingest the "salt air".

Can you locate the intake further from the tank? Maybe a cheap furnace filter behind a plastic grill?

I'm watching this discussion as I have a similar issue for my future "big" tank build.
 
Tidal Gardens
OP
iReefer12

iReefer12

Well-Known Member
Review score
+0 /0 /-0
View Badges
Joined
Apr 22, 2012
Messages
520
Reaction score
329
Review score
+0 /0 /-0
Location
Boulder, CO
I was going to place the AC Infinity fan in the fish room, easily accessible, and then run the plastic duct in a crawl space above the tank, and use a plastic ceiling vent in the ceiling. Should eliminate corrosion in the hard to get to places, might end up seeing some corrosion on the fan itself and the alluminum foil lined hose on the exhaust side, those areas can easily be replaced though.

I think I could still access the plastic hose and vent and do a very infrequent (I hope) cleaning.

I ordered all the parts and going to play with it next week, I’ll update with what I find.
 

SteveMM62Reef

Valuable Member
Review score
+0 /0 /-0
View Badges
Joined
Sep 21, 2020
Messages
1,167
Reaction score
716
Review score
+0 /0 /-0
Location
La Plata
If you want to spend a little extra, you could buy PVC Inline fan for Radon Gas. They are very Corrosion Resistant. I don’t recommend the Tjernlund, as they are noisy and not as corrosion resistant.
 

SlugSnorter

2500 Club Member
Review score
+0 /0 /-0
View Badges
Joined
Oct 19, 2021
Messages
3,469
Reaction score
2,197
Review score
+0 /0 /-0
Location
Long Island.... maybe north korea
Im planning on adding one of these AC Infinity in line fans (https://acinfinity.com/hvac-home-ve...h-temperature-and-humidity-controller-6-inch/), will have an intake above the fish tank, and an exhaust to outside.

The AC infinity ducting is lined with Alluminum foil (https://acinfinity.com/hvac-home-ve...lexible-four-layer-ducting-25-ft-long-6-inch/), is there any concern of humid air from a saltwater tank corroding the Aluminum foil??
you can also use a dehumidifier
 
World Wide Corals

Does it matter to you whether your fish are captive-bred or wild caught?

  • I only buy captive bred fish.

    Votes: 41 13.4%
  • It matters, but I will buy either captive-bred or wild-caught.

    Votes: 228 74.8%
  • I think wild-caught fish are the better option.

    Votes: 4 1.3%
  • I don’t care where the fish were bred.

    Votes: 32 10.5%
AVAST
Top