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Old 12-03-2013, 11:24 AM   #11
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Have a 2011 Sunseeker 3120. I like this rig except for the small tanks, especially the 31 gallon black tank. I can't go more than than a couple of days when dry camping before it's full. Same for the grey tank. I've got this idea about somehow putting in a larger tank(s). Has anyone attempted this or seen any article on this. My wife wants to sell it because of this. Thanks, Randy
You seem to be filling that puppy up pretty fast - when is the last time you really seriously COMPLETELY flushed your tank? Methinks you may have some goo collecting on the bottom of the tank. Fill the tank up to 1/2 with just water & drop in 2 or 3 of the tank cleaning packs. close everything up and go for a 20-30 min drive making several turns (the idea here is to slosh things around and mix the chemicals up GOOD.

Wait a day or two or three. Go to a dump station and fill your black tank, then drain. Bet a LOT of GUNK comes out!

Get a tank rinsing attachment for your sewer (unless your unit has one built in). Rinse your take - bet MORE gunk comes out

Lesson Learned: ALWAYS use those tank cleaning packets - at least every other time you dry camp.
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Old 12-03-2013, 12:40 PM   #12
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How much beer are you drinking????
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Old 12-03-2013, 09:08 PM   #13
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Hmm, lots of comments. I'm beginning to think the tank may be gunked up or something. It's a 2011, but I bought it used a few months ago. I'll try your suggestions on cleaning the tank. Thanks for your input.
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Old 12-04-2013, 07:02 AM   #14
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If chemicals don't work to clean out your tank, use ice. Throw 2 bags of ice down the toilet and go for a good drive. The movement and melting of the ice will scrape the tanks clean.
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Old 12-04-2013, 09:28 AM   #15
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Hmm, lots of comments. I'm beginning to think the tank may be gunked up or something. It's a 2011, but I bought it used a few months ago. I'll try your suggestions on cleaning the tank. Thanks for your input.
Since you bought it used who knows whats in there. You could use an inspection scope to check out the tank if you have access to one. In leau of that you could use a bright flashlight and mirror on a stick to look around through the toilet. If there is a lot of crud in the tank you should be able to see it easily.
It has got to be rare but I once saw a tank at an RV shop that had collapsed. It looked like it was sucked in and they had no idea what caused it.
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Old 12-04-2013, 10:22 AM   #16
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Ok, try this to check the "goo" in or not in your tank. While home, turn your garden hose on to full a one gallon jug up timing the fill. That will give you the rate of flow, or in other words gallons per minute. If you calabrate a five gal pail even better. Then with your black tank empty, fill it through the toilet until its full. Do the math. Check it against your black tank spec, and you will have a good approximation how full of "goo" you are!
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Old 12-04-2013, 12:54 PM   #17
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If chemicals don't work to clean out your tank, use ice. Throw 2 bags of ice down the toilet and go for a good drive. The movement and melting of the ice will scrape the tanks clean.

Chris,

This is a BRILLIANT idea!

One thought for Randy though - what is the ambient temp in your area? If you are in the South this will work well if it is 10 below where you are, well, not so much
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Old 12-04-2013, 06:19 PM   #18
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we are a family of 4 and can easily go 4-5 days on the black water. I agree with ATVer, how are you dry camping and turning 44 gallons of fresh water into almost double the waste?
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Old 12-04-2013, 07:59 PM   #19
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Hmm, lots of comments. I'm beginning to think the tank may be gunked up or something. It's a 2011, but I bought it used a few months ago. I'll try your suggestions on cleaning the tank. Thanks for your input.
since you bought it used, there's no way of telling if there's stuff in there that wasn't flushed out UNLESS you do a visual check.
a lot of us simply open the toilet gate and shine a flashlight down into the black tank.
we do this because the idiot tank level lights never are accurate, which is probably why you think the tank is full.

if you've never actually looked down into the tank, DON'T rely on the idiot tank level lights, they are worthless after you use the tanks for awhile when the RV is new. especially if the former owner never flushed the tank often, never kept water in the tank or simply left stuff in it.
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Old 12-04-2013, 08:29 PM   #20
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True, I am relying on the idiot lights, it shows 2/3 full when it's empty. I'm assuming its full when the light shows full.
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