Wet Skimmate Water Changes?

How do you think this using wet skimmate compares to using the water directly from the overflow for water changes?

I just direct my overflow line to a basement drain and move my top off pump from fresh water to a saltwater barrel
 
<a href=showthread.php?s=&postid=14054968#post14054968 target=_blank>Originally posted</a> by dagda
How do you think this using wet skimmate compares to using the water directly from the overflow for water changes?
think about this:
would you use water from your overflow to set up another aquarium or...

would you rather use wet skimmate to set up another aquarium? :)
 
How can you get so much wet skimmate? My skimmer is skimming pretty wet as is and im not sure if it would be able to do 10-15 gallons a week! I know I have an under rated skimmer for my tank, asm g1 on a 120, and hopefully getting to be able to upgrade to octo ex 200 soon :lol: But anyways, is the water level in the skimmer like less than an inch from the top? Mine is right where the skimmer cup sits, so about 2-3 inches from top of skimmer?
 
<a href=showthread.php?s=&postid=14070702#post14070702 target=_blank>Originally posted</a> by reefer31
How can you get so much wet skimmate? My skimmer is skimming pretty wet as is and im not sure if it would be able to do 10-15 gallons a week! I know I have an under rated skimmer for my tank, asm g1 on a 120, and hopefully getting to be able to upgrade to octo ex 200 soon :lol: But anyways, is the water level in the skimmer like less than an inch from the top? Mine is right where the skimmer cup sits, so about 2-3 inches from top of skimmer?
you basically raise the water level inside the skimmer neck so water is spilling freely over into the collection cup. Need a faster water change... how big is the drain on your collection cup?
MAKE IT LARGER :D
 
thats a good idea. I guess if you think about it, it is better to do it that way than just taking out diluted water when you can take out more concentrated junk :P.
 
<a href=showthread.php?s=&postid=14097502#post14097502 target=_blank>Originally posted</a> by mobert
I wet skim and top off with salty water for my water change also. My skimmer cup has a drain to house sewage and my top off container has an automatic dispenser to add salt: http://www.drsfostersmith.com/product/prod_display.cfm?c=5163+5309+14436&pcatid=14436
I just added the Koi feeder filled with salt so hopefully it won't clog or rust.

I don't miss that 50 gallon Rubbermaid container that used to sit in front of the tank for water changes!

how do you control salinity? seems the variables of evaporation and top off volume/rate, volume of skimmate along with a fixed rate of salt addition would be difficult to control. is all your top off done this way?
 
<a href=showthread.php?s=&postid=14098249#post14098249 target=_blank>Originally posted</a> by Elliott
how do you control salinity? seems the variables of evaporation and top off volume/rate, volume of skimmate along with a fixed rate of salt addition would be difficult to control. is all your top off done this way?

I actually do check my salinity every few days and adjust the salinity of the top off water accordingly. I have been doing it this way for three years and it gets predictable. For instance after a heavy feeding, I can expect the skimmer to be more active and I would add more salt to the top off container. Not hard to do and I feel that wet skimming has helped control my nitrates.

Yes, all my top off is salty water.
 
The other advantage of wet skimming is the skimmer neck needs much less cleaning. I only need to clean the neck and cup once every month or two.
 
mobert - you rock on so many levels. :D

I was considering this potential... and of course you've already done it.

What about using a controller (I'm thinking of getting a ReefKeeper Elite) to monitor salinity, then turn on the salt Koi feeder if it gets too low?
 
<a href=showthread.php?s=&postid=14100508#post14100508 target=_blank>Originally posted</a> by OCEAN SIZE
mobert - you rock on so many levels. :D

I was considering this potential... and of course you've already done it.

What about using a controller (I'm thinking of getting a ReefKeeper Elite) to monitor salinity, then turn on the salt Koi feeder if it gets too low?

I don't mind checking the salinity with the hydrometer. I have gotten away from using probes----my ph and orp probes have long ago stopped working (needed cleaning or replacement much too often). The Koi feeder has a similar interface as the Eheim fish food feeders. You can adjust it to feed once or four times a day with one or two drops each feeding. It drops 1/2 cup of salt each time. So I can adjust it to drop 1/2 to 4 cups of salt per day.

Thanks for the compliment!
 
<a href=showthread.php?s=&postid=14099971#post14099971 target=_blank>Originally posted</a> by mobert
I actually do check my salinity every few days and adjust the salinity of the top off water accordingly. I have been doing it this way for three years and it gets predictable. For instance after a heavy feeding, I can expect the skimmer to be more active and I would add more salt to the top off container. Not hard to do and I feel that wet skimming has helped control my nitrates.

Yes, all my top off is salty water.

I'm going to try it! thanks :D

do you allow your skimmer to drain directly from the cup to the sewer line? or to a container with auto shut off? I've alway been afraid to allow it to drain without a shut off mechanism since skimmers can go nuts and drain too much, although if you are replacing with salt solution it mitigates the risk. hmm, I'm currenly using Kalk to top off, I don't think it mixes with salt very well... :(
 
I turn off my Kalk top off when I use this method to do my water change. It takes me approximately 4 hours to get 10 gallons of very wet skimmate. I do it when I know i'll be around the house. It would be cool to set up a auto topoff, maybe with a dedicated skimmer on a timer and multiple float switches to do the water changes for you.

Later,

Jim
 
<a href=showthread.php?s=&postid=14102056#post14102056 target=_blank>Originally posted</a> by Elliott
I'm going to try it! thanks :D

do you allow your skimmer to drain directly from the cup to the sewer line? or to a container with auto shut off? I've alway been afraid to allow it to drain without a shut off mechanism since skimmers can go nuts and drain too much, although if you are replacing with salt solution it mitigates the risk. hmm, I'm currenly using Kalk to top off, I don't think it mixes with salt very well... :(

I actually use a few safety measures.

The drain is restricted to a 1/4" polyethelene line. If the skimmer were to go crazy, the excess skimate overflows back into the sump but before it does that, the venturi intake for the skimmer pumps would suck the extra back through the pump and in the skimmer again.

The top-off water which comes directly from the RO filter is controlled by two float switches in the sump. In addition, there is a John Guest 1/4 valve that only allows a slow drip through the RO fill tube. There is a Kent float valve in the top-off water mixing container and another one in the sump.

So, worse case scenario is the the skimmer goes crazy and sump gets low on water and air bubbles are blowing in the tank from the return pump. The tank does not turn into a fresh water tank. :)

My top off water also goes through a Kalk container before it gets to the top off container. I'm not sure how effective this but my Calcium levels are acceptable.
 
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<a href=showthread.php?s=&postid=14102218#post14102218 target=_blank>Originally posted</a> by mobert

My top off water also goes through a Kalk container before it gets to the top off container. I'm not sure how effective this but my Calcium levels are acceptable.

so you are using a salt solution to mix your Kalk? ok, I'm going to try it! :D

I remember reading a post from Randy about some problem related to using a salt soln with Kalk, but hey, it's worth a try, I like your method! :)
 
A few pictures worth a thousands words:
excuse my mess:
skimmer.jpg

The drain container is like a toilet tank. It doesn't empty until it is full and then drains to the bottom of the drain tube so the 1/4" drain line does not get clogged.

topoff.jpg

Probably only a mild kalk solution as there is no automatic mixing. I only fill it once a year or so.
 
<a href=showthread.php?s=&postid=14103862#post14103862 target=_blank>Originally posted</a> by Elliott
how does your waste container automatically drain when full?

It works by siphon and the siphon does not start until the water height/pressure is near the top of the container. You can see the 1/4" tube with the blue valve on it near the middle of the container. The end of the tube is a few inches off the bottom so it leaves the thick sludgy stuff that settled in the container. I rather do this than risk the 1/4" drain getting plugged.

The tube from the skimmer cup to the container has to be cleaned while the tube from the container to house sewage is perfectly clear.
 
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<a href=showthread.php?s=&postid=14103998#post14103998 target=_blank>Originally posted</a> by mobert
It works by siphon and the siphon does not start until the water height/pressure is near the top of the container. You can see the 1/4" tube with the blue valve on it near the middle of the container. The end of the tube is a few inches off the bottom so it leaves the thick sludgy stuff that settled in the container. I rather do this than risk the 1/4" drain getting plugged.

The tube from the skimmer cup to the container has to be cleaned while the tube from the container to house sewage is perfectly clear.

if you are replacing your evaporative water this way (replacing fresh with salt water) how do you prevent hypersalinity?
 
<a href=showthread.php?s=&postid=14114504#post14114504 target=_blank>Originally posted</a> by Elliott
if you are replacing your evaporative water this way (replacing fresh with salt water) how do you prevent hypersalinity?
replace with 1.022 instead of 1.026
adjust according to tank s.g.
 
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