Code: DJSL
Price: $149.99
View more items in   Skimmer Accessories
View more items from   AVAST Marine Works



Now that the Swabbie has increased skimmate production while also reducing the frequency of skimmer cleaning, wouldn't it be nice not to have to empty your smelly collection cups as often, or even better, worry about messy skimmate overflows?

We've developed a device that sinks two boats with one cannonball: isolate skimmate while purifying stinky exhaust air, as well as provide a failsafe mechanism to shut off overflowing skimmers.

Our new skimmate collector and shutoff system, Davy Jones' Skimmate Locker, comes in three sizes to most efficiently fit next to your sump, where space is always premium. Rather than a traditional ping-pong ball (which only works with downdraft skimmers) or a magnetic float switch that travels on a central rod and is prone to sticking (especially in a vat full of sticky fish poo), we opted to use a pressure-sensitive switch triggered by rising fluid level. As the fluid level reaches the sensor tube, air is trapped and pressurized, causing the switch to open and cutting power to the skimmer pump(s). While the skimmate level rises, stinky air is forced out the top of the Locker, through a carbon filter that scrubs the foulness from the air before it harms your senses.

Now, rather than reaching to pull off a skimmer cup that may only have a few centimeters of clearance, or dealing with a hose in a flimsy milk jug, simply disconnect the two pieces of tubing and dump. Combined with a Swabbie, and depending on your skimmer's production volume, you could safely go weeks or even months without touching the skimmer and know that it is running at peak efficiency, with the peace of mind that it will shut off when full. A pretty green LED light indicates a working outlet; i.e., when the switch is not activated.

Installation is very straightforward. Simply fill the Locker's cap with carbon, connect a tube from your skimmer cup drain to the Locker, and plug in the relay box between your skimmer pump and its outlet.  Done.

Maintenance is also quick and easy.  Rather than pulling hard and rocking the tubing side to side to remove it from the barb fitting, the fitting slips into a custom fit collar installed in the lid.  It is snug enough to prevent air leakage but loose enough to remove without wiggling.  The pressure switch has a similar attachment; the entire sensor cylinder lifts out of the lid rather than having to remove the blue tubing from the barb fitting.  Finally, the lid is held on by two short thumbscrews.  We chose to use two thumbscrews and a special thin sealing material rather than a traditional keyhole flange and 4 or 6 thumbscrews.  In testing, we've found it faster and easier to remove the two screws completely rather than loosen additional screws commonly found in the keyhole flange.  Finally, the carbon cap is held on by a plastic nut so you can safely move the lid around without fear of spilling carbon.

Digital Out version is now available for aquarium controllers.  Need a email notification or text message when it is time to empty your skimmer?  Digital is for you.  Connections are 2 wire non-polarized 18 AWG shielded wire, simply plug into your breakout box or use the float switch adapter wire that came with your controller.

Technical Data

Small Medium Large
Chamber 3.75" 4.5" 6"
Footprint 4.75" x 4.75" 5.5" x 5.5" 7" x 7"
Total Height 18" 18" 18"
Drain Fitting Height 15.5" 15.5" 15.5"
Capacity .58 gal/2200ml .85 gal/3200ml 1.5 gal/5900ml
Power Input 110v 110v 110v
Relay Box Capacity 3 amps 3 amps 3 amps
Switch Rating 10+ mil cycles 10+ mil cycles 10+ mil cycles

Special Combo: Order our skimmer neck cleaner, the Swabbie, with your Locker and get $20 off the total price!

Click here for Standard outlet box installation manual
Click here for Digital output installation manual
Click here for Digital output for ReefKeeper Elite installation manual
SKU Discount Amount Expiration
SKU Available Message
Davy Jones' Skimmate Locker Sm Yes
Davy Jones' Skimmate Locker Md Yes
Davy Jones' Skimmate Locker Lg Yes
Standard Switch Yes
Digital Switch, bare wire/ Neptune Break out Box Yes
Digital Switch, Neptune compatible Yes
Digital Switch, Profilux compatible Yes
Digital Switch, Reef Angel compatible Yes
Digital Switch, RKE/RKL compatible Yes

Average Customer Rating: star star star star star (10 customer reviews)

Submit Your Own Review

Review by: Perry, Aug 12, 2012   star star star star star

Coupled with the Swabbie you can't go wrong. I went with the 1.5 gallon since I have room for it, would've went with the 5 gallon bucket if I had room for that. Not having to empty and clean a skimmer cup multiple times a week is great.

Review by: Jimmy, Feb 20, 2014   star star star star star

Works as advertised. Allows me to skim wet or dry without having to worry about overflow or dumping back into the tank. Great product, couldn't be happier.

Review by: Brian, May 28, 2015   star star star star star

Something you wonder if you really need...and wonder what you did without! Allows me to skim without having to worry about overflowing or flooding back into the tank, especially when I am out of town. Great product, couldn't be happier as I am with all my Avast products.

Review by: Brandon, Jun 2, 2015   star star star star

Works great! Got this when I bought my CS3 and Swabbie, haven't had to touch my skimmer for a few weeks now! I bought the Apex compatible switch, the only thing I would change about that is to add some breakout box ports to the sensor box, as it ties up a breakout box port. If you don't have any expansion modules, then you cannot use a breakout box for float switches and such. Luckily I have an expansion module so I have no issues with it. Tested it out with Apex, and it's very good at sensing when the locker is full.

Review by: marco, Jun 3, 2015   star star star star star

got to love a skimmate locker. have purchased quite a few over three years and only one has failed. when it did the guys at avast are impeccable to help and provide a solution no matter how long it has been. this is a must have to any skimmer purchase. great item.

Review by: Dip, Jun 3, 2015   star star star star star

I had the medium sized locker sitting around in a box for 3 months before I started using as I had received it as a gift and I really didn't think I needed this. But man was I wrong, I love this and I can't think of running the skimmer without this. Like many I have busy life and I like the fact that I don't have to worry about skimmate overflowing in the sump and since I have this connected to APEX I get notification when the skimmate locker is full. Its also great for people who go out of town often for short duration.

Review by: Vincent, Jun 4, 2015   star star star star star

Why did I take so long to finally get one of these!? It makes emptying the skimmate so much easier. I went with the large size and have it connected to my Apex breakout box. The sensor works wonderfully. I never worry about it overflowing and disconnecting it to change it out is so easy. The build quality on the skimmate locker is fantastic. Feels very sturdy and solid. 110% recommend

Review by: Richard, Jun 8, 2015   star star star star star

Just purchased this Skimmate locker and can't wait to get it.... I've always thought about making something like this. This is a genius idea! Can't wait to show it off!

Review by: Paul, Jun 14, 2015   star star star star star

This product is awesome. It has saved my butt more than once - the first time my skimmer overflowed I was on vacation...this device quickly turned off my skimmer and paid for itself. Even better, it integrates with the Apex and shoots me an email when my skimmer is overflowing. Made in the USA.

Review by: Jack, Jun 23, 2015   star star star star star

Ahoy Mateie's. My DJSLocker arrived a couple of days ago and I am very happy with the construction and ease of install. Built in features make change and clean out a brezze. Looking forward to dumping skimmate less often and with ease. Thanks Avast!