Go Back   Aquarium Advice - Aquarium Forum Community > Saltwater and Reef > Saltwater & Reef - Getting Started
Click Here to Login

Join Aquarium Advice Today
Reply
 
Thread Tools Search this Thread Display Modes
Please support our sponsors and let them know you heard about them on AquariumAdvice.com
 
Old 10-17-2007, 02:11 AM   #1
Aquarium Advice Activist
 
Join Date: Apr 2004
Location: NJ
Posts: 142
Evaporation!!

I just got started in sw. I have a 40 gal tank with about 2in bed of sand and 45 lbs of lr on the way. 1 protein skimmer and penguin bio. The tanks been established for about a month now, and ive noticed that I have an extreme evaporation problem. I replace about 1 gallon every two days. This makes me feel that its going to be very hard to maintain the tanks system at a stable setting. I get crystals of salt on everything around the tank, im assuming this is because the h20 evaporates leaving the salt? I have a hood but it doesnt seem to do all that much. Anyone have any suggestions?
__________________

__________________
hockeydude15 is offline   Reply With Quote
Old 10-17-2007, 02:43 AM   #2
Aquarium Advice Addict
 
Join Date: Aug 2006
Location: not here anymore
Posts: 5,338
Sounds like you have a fair amount of surface agitation causing a lot of "micro splashing" if you're getting dried salt crystals everywhere. That could be part of the issue.

I've got a 46g, with a semi-glass top (split glass top on plastic sliders, so it's not really air tight) and I see anywhere between 1/2 quart to 1 quart evaporation a day, depending on the room conditions - just to give you a comparison. If you've got salt everywhere around the top of the tank, it sounds like it's pretty open on top (which you want) so I'd expect you'd get quite a bit more evaporation than I see... so your numbers don't seem excessive in my opinion.

Evaporation is something you have to keep on top of with frequent fresh water top offs. But a gallon a day doesn't cause that drastic of a salinity swing - for a 40 gallon tank at SG 1.0250, if you lose 1 gallon of water through evaporation and don't replace it, your SG is only raised to 1.0256. Granted... you want to keep it consistent, but in my opinion that little of an increase over 24 hours isn't that much.
__________________

__________________
Kurt_Nelson is offline   Reply With Quote
Old 10-17-2007, 12:00 PM   #3
AA Team Emeritus
 
Devilishturtles's Avatar
 
Join Date: Jul 2003
Location: Frederick, Maryland
Posts: 8,544
Send a message via Yahoo to Devilishturtles
I get about a half gallon a day of evaporation in my 45 gallon with a full open top, so about the same as you. Every 2 days I just top it off with some freshwater and all is fine.

I agree with Kurt that you must have a lot of surface agitation to cause the salt everywhere. Unfortanetly though, the evap is normal.
__________________
-Lindsay

Live in the Western MD/West Virginia/DC Metro Area?
Join our very active regional forum Here

Like the advice someone just gave you? Add to their reputation! Click on the balance icon underneath their username and let them know.
Devilishturtles is offline   Reply With Quote
Old 10-17-2007, 06:35 PM   #4
Aquarium Advice Regular
 
Join Date: Nov 2006
Location: Green Bay, WI
Posts: 83
I have a 250 gal, and I replace about 5-7 gallons every 2 days. Is this a drastic swing in salinity? Im working on plumbing a RO/DI top off unit directly into the sump, but finding the time to do it is harder than i thought I just run a python into the sump to top off.
Thanks!
__________________
ken_wied is offline   Reply With Quote
Old 10-17-2007, 06:47 PM   #5
SW 20 & Over Club
 
ccCapt's Avatar


 
Join Date: Mar 2004
Location: Northeast PA
Posts: 5,362
Send a message via ICQ to ccCapt
I lose about 1.5 gals/day from evaporation on my 75. I think alot has to do with the MH's and 3 fans in my canopy. I add about 3 qts in the AM and 3 in the PM.

IMO, it's better to add top off water every day or multiple times a day if possible. It's all about stability.
__________________
/Larry
125g reef
See My Tank Info
Check out The build project
ccCapt is offline   Reply With Quote
Old 10-17-2007, 08:37 PM   #6
SW REEF 18+ YEARS
Community Admin
 
melosu58's Avatar



Tank of the Month Award
 
Join Date: Oct 2004
Location: Virginia
Posts: 38,249
Quote:
Originally Posted by cccapt

IMO, it's better to add top off water every day or multiple times a day if possible. It's all about stability.
I totally agree.
__________________

SITE ADMINISTRATOR

You can view many of my fish and corals in my photo albums in my profile.

View my tank


AA Community Rules|AA TOS

Forums 101 - posting, accounts, basics
melosu58 is offline   Reply With Quote
Old 10-18-2007, 12:05 AM   #7
Aquarium Advice Addict
 
Join Date: Aug 2006
Location: not here anymore
Posts: 5,338
Interesting... from the numbers folks are putting up here, looks like people are getting about 1% to 2% of their tank capacity per day evaporating away. Mine is less than 1%, but as I mentioned, I kind of have a glass top while most people go topless!
__________________
Kurt_Nelson is offline   Reply With Quote
Old 10-18-2007, 01:17 AM   #8
Aquarium Advice Addict
 
fijiwigi's Avatar
 
Join Date: Sep 2007
Location: Eastern Washington
Posts: 1,726
that makes sense you know if you go topless you are bound to get a sunburn. LOL
__________________

FijiWigi_Tank_photos
120G Oscar tank in progress
fijiwigi is offline   Reply With Quote
Old 10-18-2007, 09:15 AM   #9
AA Team Emeritus
 
austinsdad's Avatar


 
Join Date: Mar 2004
Location: Accokeek, Maryland
Posts: 7,694
I use a 37g FW reservoir with a JBJ auto top off unit. Mounted under the stand. My 155 runs thru that in about 1.5 to 2 weeks.

Quote:
I have a 250 gal, and I replace about 5-7 gallons every 2 days. Is this a drastic swing in salinity?
I'd measure to find out if it were me.
__________________
-Ray-

"Life may not be the party we hoped for but while we are here we might as well dance!"

austinsdad is offline   Reply With Quote
Old 10-18-2007, 02:12 PM   #10
AA Team Emeritus
 
cmor1701d's Avatar


 
Join Date: Feb 2003
Location: Belle Mead, NJ
Posts: 7,814
I have a 45 gallon brute as a resovoir with a JBJ ATO connectedt ph going to my overflow. It lasts about 3 weeks on my 125.
__________________

cmor1701d is offline   Reply With Quote
Reply

Please support our sponsors and let them know you heard about them on AquariumAdvice.com

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
evaporation hoodla dollas Freshwater & Brackish - General Discussion 2 02-28-2005 07:38 PM
Evaporation Sonicmunky Saltwater & Reef - Getting Started 4 01-09-2005 01:59 AM
Evaporation? AlonelyCody Saltwater & Reef - Getting Started 3 01-08-2005 12:53 AM
Evaporation Zero333 Saltwater & Reef - Getting Started 6 11-17-2004 04:42 PM
Evaporation... BlueCrystalMan Freshwater & Brackish - Coldwater, Native Fish & Ponds 3 07-10-2004 12:46 PM







» Photo Contest Winners








Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -4. The time now is 05:27 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.