What's your evap rate?

[Len]

I'm curious what people's evap rate is. I guess pertinent information would include:
Tank Size?
Use of skimmer?
Open or enclosed top?
Circulation system?
Location?

FWIW: The reason I ask is I just plumbed my skimmer and it seems my evap went skyrocketed. I checked for leaks and couldn't find any, but this is plumbed through my wall to my outdoor chiller, so the paranoia in me keeps hinting that I may have a leak in the wall. But two things to consider: 1) my old 120g was using this same in-wall plumbing for close to 10 years, and 2) When my contractors came over recently to reinforce my floor, they did not mention anything about visible water damage. I think I'm just being paranoid

 

[Anonymous]

Tank Size? 1000
Use of skimmer? big DIY downdraft
Open or enclosed top? enclosed but vented to the outside
Circulation system? several Iwaki external pumps
Location? basement & Family room

evap = 5 (summer) - 10 (winter) gallons a day

 

[cjsrch]

my old 55 gallon tank with wetdry sump ( only external water movement)
and 440 wats of vho light i had i am guessing a lil under a gallon a day

 

[npaden]

If it was leaking and you were replacing the water with fresh water then your salinity would be dropping.

My 1,750 gallon system evaporates around 10 gallons per day in the winter and 25 gallons per day in the summer when I use fans for cooling.

FWIW, Nathan

 

[cjsrch]

len skimmers increase evap because of the air injection. ( also how much gunk you removing daily)

 

[Len]

Thanks for the input thus far.

Nate, good point on the salinity. My old tank did not have salinity decline over 10 years, so it's probalby not a leak unless I somehow damaged the existing in-wall plumbing during my upgrade. I guess it's just evap. Without lights or fans, I'm evaping about a little over a gallon already. With lights and fans, I'm sure I'll hit about 3 gallons. My tank is 176g or so.

Hey Guy, I had no idea you had a 1000 gallon tank!

 

[Anonymous]

My little 10g build off tank
cubby hole at lfs
open top
skimmer
big box fan for cooling
1g a day evap.
1/2" seaswirl w/maxi jet 1200

29g
2 skimmers
simi open top
bedroom next to heater
1/2" seaswirl w/mag 7
2 maxi jet 1200
1g summer and winter

 

[Len]

Hehe. The percentage rates of evap are all over the map (by magnitudes of 10s and 100s!)

 

[Anonymous]

My 300G evaps 3 gallons per day in the summer. I never checked in the winter. Wait, we don't have that here.

Louey

 

[MelanieF]

Tank Size? 72 gallon bowfront
Use of skimmer? Yes, the dreaded Seaclone... :lol:
Open or enclosed top? Open top
Circulation system? Powerheads, skimmer and HOB filter for media
Location? Livingroom

Evap is about 5 gallons per week in winter and maybe 2 per week in summer... probably worse in winter since furnace running and air is much more dry. :? Usually the skimmer removes as much salt w/ skimmate as evap removes fresh since salinity stays even at all times and I can just mix new saltwater to add at any point to bring the water level back up.

 

[Anonymous]

Tank Size - 75
Use of skimmer - Red Sea Berlin
Open or enclosed top - Open
Circulation system - In tank power head & sump return
Location - center of house

Lose about a gallon a day.

I keep the humidity in the house at 50%. Humidifier in the winter dehumidifier in the summer.

 

[cjsrch]

My 300G evaps 3 gallons per day in the summer. I never checked in the winter. Wait, we don't have that here.

Louey

tonight in ft lauderdale will get down .. well i forget but some part of florida in the 30s i think they said.

anyways in florida my evap rate seems to go up in the winter. i think maby it cause of less humitity in hte air

 

[Anonymous]

Tank Size -- about 70 gallons total
Use of skimmer -- Remora Pro
Open or enclosed top -- Open top, and open topped sump
Circulation system -- closed loop with Iwaki, and a smaller pump for my return
Location -- Living room, with forced air heating/cooling

About a gallon a day on average, forced air heating really dry's the house out.

 

[Anonymous]

I have hot water heating, which doesn't really matter since I control the humidity.

The variables in this hobby could drive a person crazy

 

[dgasmd]

I vaporate from 8-12 gpd depeding on the temps outside. On cooler days like now about 8 gpd. Mid summer is more like 12 gpd. I do use fans and a chiller.

Tank Size? 1000g system

Use of skimmer? Yes. Large CC airstone skimmer

Open or enclosed top? Completely enclosed tank top. Isolated fromt he house and vented to the garage outside.

Circulation system? 5 close loops

Location? Florida

 

[EVO]

about 1/2 gal per day in mine... 72 gal + ~8gal in sump system. I rigged up a floater switch to activate a small aqualifter pump to replenish from a bucket of fresh filtered water mixed with kalkwasser and iodine. I used to replenish by hand but found adding the large volume of high ph water could ph shock some sensitive inverts, same with adding iodine once a week. Now it replenishes a little at a time all day long, keeping the ph and iodine levels constant, the inverts look happier

 

[Anonymous]

I think that tank size is the biggest variable, but how would abient room temp figure in.

My house stays at a very confortable 77-79 all year except when I open the windows 8O

 

[fishfanatic2]

Tank Size-29 gallon
Use of skimmer-You guessed it, a Prism!!!
Open or enclosed top-Open
Circulation system-Skimmer, power filter, and about 325 gph of water pump movement.
Location-First floor.

My tank loses a little less than .5 gpd in the summer, and about a 1 gpd in the winter.

 

[Mihai]

90 gal, ER skimmer, 2gal/day. I really didn't notice an increase in evaporation rate when I started the skimmer. If I were you, I'd be worried. I'd try to turn the skimmer off to see what happens...

M.

 

[LA-Lawman]

Tank Size -- 180g - about 210 gallons total
Use of skimmer -- ER RS8-2 soon to be reefmania ps-8
Open or enclosed top -- closed, and open topped sump
Circulation system -- submersed pump. tunze turbelles and some maxi-jets for circ

Location -- Living room, with forced air heating/cooling (tucked in a closet to for an in-wall) t-stat vented thru ceiling to outside duct

1-2g/ day on average