Bottling with a different ale strain

[brewNYC]

So, I have a Belgian quad, a Belgian triple and a dopplebock that just won't quite carbonate for me. Since all of these are high ABV, and all spent a few months in secondary, I'm guessing my yeast has just wimped out and can't do anything much with my bottling sugar. My plan is to add some conditioning yeast by hydrating some dry yeast, then opening up my bottles and squirting a tiny bit in each with a syringe.

Here is the question- I do not want to spend the extra $ to buy new packs of each of the three yeast that I used for these brews. Instead, I'm planning to just use a pack of US-05 as a conditioning yeast for all 3. My concern is this - some of these only attenuated about 75 percent (down to about 1.025 and around 10% abv). My US-O5 brews typically attenuate about 85 percent. Since US-05 seems to be a very "strong" yeast, is there any chance the US-O5 will over-ferment my beers in the bottle if I use it for bottle conditioning? An additional 10% attenuation after bottling would definitely give me bottle bombs!

Thanks..

 

[redllama]

How long have they been trying to carbonate? What is the current temp of the room they are in? I've had some beers that took a month or two to carbonate after long term aging. One trick I've found is to gently turn the bottles upside down a couple times to rouse some of the yeast.

If you want to add more yeast the cheapest way would be to just add some wine yeast as they are typically under $1/pack or get CBC-1 which is a bottle conditioning strain

 

[brewNYC]

They have been in the bottle about 6 weeks now. I tried rousing up the sediment in the bottom of the bottle a couple of weeks ago.

 

[Rhaop]

Use a champagne yeast, should be cheap and generally only targets the simple sugars added at bottling, the cbc-1 looks like it would work fine but i’ve never used it

 

[Smellyglove]

If you go down the cbc-1 route just make sure all the equipment is properly sanitized after using it as cbc-1 is a killer strain. If you cross-contaminate you can end up with weird batches in the future.