water evaporation? - Tropical Fish Keeping - Aquarium fish care and resources
Reply
 
LinkBack Thread Tools
post #1 of 20 Old 04-18-2011, 04:38 PM Thread Starter
Member
 
Boredomb's Avatar
 
water evaporation?

Okay this might be a stupid question but how important is it to have water evaporation in an aquarium? The way I have my lid I have very little if any because of how tight it is. Is this a problem?
Boredomb is offline  
Sponsored Links
Advertisement
 
post #2 of 20 Old 04-18-2011, 07:06 PM
Member
 
bettababy's Avatar
 
That should not be a problem as long as you are doing enough water changes to keep up with your water quality needs. Lack of evaporation is actually a good thing. The process of evaporation can jump ammonia, nitrite, and especially nitrate levels all over the place. Water evaporates, waste levels do not, thus the waste becomes concentrated in the water. This is why water changes require removal of water before adding clean water... and why topping off a tank from evaporation can make problems worse (or create problems to begin with).

Dawn Moneyhan
Aquatics Specialist/Nutritionist
Juneau, WI
bettababy is offline  
post #3 of 20 Old 04-18-2011, 07:07 PM
Member
 
bettababy's Avatar
 
Forgot to add... just be sure there is some kind of circulation/ventilation at the water's surface for proper gas exchange (O2, CO2, etc).

Dawn Moneyhan
Aquatics Specialist/Nutritionist
Juneau, WI
bettababy is offline  
post #4 of 20 Old 04-18-2011, 07:44 PM Thread Starter
Member
 
Boredomb's Avatar
 
Quote:
Originally Posted by bettababy View Post
Forgot to add... just be sure there is some kind of circulation/ventilation at the water's surface for proper gas exchange (O2, CO2, etc).
There is a gap between the water and the lid. I do have two holes cut in the plexiglass so the wires and hoses for the heater and filter to go in. So there should be some ventilation there I would think. Most of the the plexiglass is covered with condensation though.
Boredomb is offline  
post #5 of 20 Old 04-18-2011, 07:45 PM Thread Starter
Member
 
Boredomb's Avatar
 
Quote:
Originally Posted by bettababy View Post
That should not be a problem as long as you are doing enough water changes to keep up with your water quality needs. Lack of evaporation is actually a good thing. The process of evaporation can jump ammonia, nitrite, and especially nitrate levels all over the place. Water evaporates, waste levels do not, thus the waste becomes concentrated in the water. This is why water changes require removal of water before adding clean water... and why topping off a tank from evaporation can make problems worse (or create problems to begin with).

Thanks for that explanation on that!!
Boredomb is offline  
post #6 of 20 Old 04-18-2011, 07:55 PM
Member
 
bettababy's Avatar
 
You're welcome. Also, remember... the only "stupid question" is the one that isn't asked.

Dawn Moneyhan
Aquatics Specialist/Nutritionist
Juneau, WI
bettababy is offline  
post #7 of 20 Old 04-18-2011, 08:05 PM Thread Starter
Member
 
Boredomb's Avatar
 
Quote:
Originally Posted by bettababy View Post
You're welcome. Also, remember... the only "stupid question" is the one that isn't asked.
Okay thanks
Boredomb is offline  
post #8 of 20 Old 04-19-2011, 12:08 PM
Member
 
Byron's Avatar
 
My only comment is that my tanks have run for years just as you have described. I have glass covers on the larger and the normal hoods on the smaller, and these are not airtight so there is more air circulation than you might think. But in the morning the glass and hoods are covered with water that has condensed from the tank, since the water is warmer than the air, and it drips off heavily. On the morning I do the water change the amount of water than can run off one piece of glass is quite remarkable. Once the lights come on it obviously evaporates faster until the glass under the lights is dry. If your water is hard, the whitish deposit left on the glass will be the minerals, and that needs to be cleaned off weekly during the water change; even a very thin "haze" will significantly block light penetration.

Aside from the tank issues Dawn mentioned, having all that water getting directly into the room is not good for the house. Just like in a bathroom after a shower. Water condensing on the walls and ceiling will penetrate the surfaces. Best to limit that, and a good fitting hood/cover on the tank does.

Byron.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
Byron is offline  
post #9 of 20 Old 04-19-2011, 12:15 PM Thread Starter
Member
 
Boredomb's Avatar
 
Quote:
Originally Posted by Byron View Post
My only comment is that my tanks have run for years just as you have described. I have glass covers on the larger and the normal hoods on the smaller, and these are not airtight so there is more air circulation than you might think. But in the morning the glass and hoods are covered with water that has condensed from the tank, since the water is warmer than the air, and it drips off heavily. On the morning I do the water change the amount of water than can run off one piece of glass is quite remarkable. Once the lights come on it obviously evaporates faster until the glass under the lights is dry. If your water is hard, the whitish deposit left on the glass will be the minerals, and that needs to be cleaned off weekly during the water change; even a very thin "haze" will significantly block light penetration.

Aside from the tank issues Dawn mentioned, having all that water getting directly into the room is not good for the house. Just like in a bathroom after a shower. Water condensing on the walls and ceiling will penetrate the surfaces. Best to limit that, and a good fitting hood/cover on the tank does.

Byron.
Thanks Byron, It does leave a white haze on the lid I didn't put much thought in it being minerals and needed to wiped clean. I will start doing that with water changes.
Boredomb is offline  
post #10 of 20 Old 04-19-2011, 12:42 PM
Member
 
Byron's Avatar
 
Quote:
Originally Posted by Boredomb View Post
Thanks Byron, It does leave a white haze on the lid I didn't put much thought in it being minerals and needed to wiped clean. I will start doing that with water changes.
Doing it weekly will be easier. The longer it stays, the harder it is to remove. I have very soft water, so there is minimal mineral deposits on my glass, but it still occurs. I "wash" the glass with paper towels, using the water on the glass, then buff them dry with a cloth towel. If the mineral deposit is stubborn, vinegar can be used in the water to wash it off, then dry it completely.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
Byron is offline  
Reply

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
Water evaporation uksub Beginner Saltwater Aquariums 4 02-05-2009 11:52 PM
strange water evaporation issues? miagrrl Beginner Freshwater Aquarium 3 12-29-2007 02:29 PM
water evaporation going crazy serpaekeeper45 Beginner Freshwater Aquarium 7 11-11-2007 03:21 PM
How do you deal with water evaporation? paintsforyou Tropical Fish Diseases 11 02-11-2007 02:19 AM

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 On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome