Hi all! This weekend when draining the black tank, it was very slow. I've been wondering if the outer casing on the drop-ins isn't dissolving and clogging the drain pipes. I went ahead and bought the liquid form, but wanted to ask if any of you have experienced this and what you did to solve it. In case you're wondering, we limit the number of times we go #2 and only use toilet paper designed for RV/boat septic systems.

I've not found that to be a problem but we try to wait to dump until the tank is nearly full. We also use a cup of Calgon and a few squirts of Dawn to `move' things along.One of the advantages of owning your own RV is that you get to do what you want; despite what others state. One example is to dump before traveling. The better way is to dump immediately upon arrival because the `stuff' will have mixed pretty well during travel.BTW the ice cube idea has been debunked. They just float round on the top.

We have always used Thetford liquid (in the premeasured 6 pack). Once emptied, we prime the tank with a couple of gallons of water and one bottle. (be liberal with the water) We always allow the tank to fill to above 3/4 before dumping, never less (even if I have to top it off manually first). We dump our black water followed by our grey water to rinse out the hoses. Keep in mind that the whatever deodorizer product you use, water is your friend and it needs time to work which is why you need to priming the tank helps as any stubborn particles will dissolve while your RV is awaiting your next trip. Also, if you dump your black tank every weekend, you may be dumping it too often, i.e. it is not full enough.

First, no that is not your problem.2nd WHy are you throging money down the toilet (literally) the chemicals really do not do much for you if anything, clearly NOT worth the moneyIF you can go a month without dumping then a biological like RID-EX RV (not a recommendation for that brand or any other brand. but an example of what I'm talking about) may help.. or not. But for the most part all of em are money down the toilet and that's all.|True storyFellow RVer had that same (Very slow drain) issue. Finally he got into the tankWhen they cut the hole in the floor.. they just dropped the wood into the tank, where it clogged the drain.He got it out. (they make elbow length or longer "Rubber gloves"_Rinsed it offDouble bagged itSent it to the CEO of the company.

Dick_B wrote:I've not found that to be a problem but we try to wait to dump until the tank is nearly full. We also use a cup of Calgon and a few squirts of Dawn to `move' things along.Ditto along with LOTS of water which IMO is the main key in keeping things "MOVING":BLarry

Also, you dont need to buy grossly overpriced bad TP. Any brand that is okfor home use with septic tank syatems are fine. (we use angelsoft). If you are worried about a problem in the tank, I havent done it but saw a comment in here about cleaning a tank with ice. Empty tank as fully as possible, dump 10 pounds of ice down the toilet and drive a few miles making some turns as you go. Chunks of ice break up stuff sticking to sides and bottom, will melt within a half hour so can be easily dumped.

Drop-ins or liquid? | Good Sam Community

IB853347201
Nomad
Jun 26, 2018
We have always used Thetford liquid (in the premeasured 6 pack). Once emptied, we prime the tank with a couple of gallons of water and one bottle. (be liberal with the water) We always allow the tank to fill to above 3/4 before dumping, never less (even if I have to top it off manually first). We dump our black water followed by our grey water to rinse out the hoses. Keep in mind that the whatever deodorizer product you use, water is your friend and it needs time to work which is why you need to priming the tank helps as any stubborn particles will dissolve while your RV is awaiting your next trip. Also, if you dump your black tank every weekend, you may be dumping it too often, i.e. it is not full enough.
Dick_B
Explorer
Jun 26, 2018
I've not found that to be a problem but we try to wait to dump until the tank is nearly full. We also use a cup of Calgon and a few squirts of Dawn to `move' things along.
One of the advantages of owning your own RV is that you get to do what you want; despite what others state. One example is to dump before traveling. The better way is to dump immediately upon arrival because the `stuff' will have mixed pretty well during travel.
BTW the ice cube idea has been debunked. They just float round on the top.

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