Ok or not fermentation?

[frostyp]

This is a John Bull London Porter Kit
Added 500g of spray malt and 500g of dextrose
First time making up a starter from a brewlab yeast slant Made up 900ml starter, starting fermentation was violent! Had blow off tube fitted also, now been in primary nine days is still activity in air lock so I know it's still fermenting , normally on the kits I've done they are usually done by now
And crausen ring just surround , this though is very foamy and what smells and looks like yeast slime on the top, do you think it's knackered should I give it a gentle stir? Is this usual after msking a starter?

 

[unionrdr]

That's yeast krausen. It's likely still fermenting after 9 days,albeit slower than when it started. Seal it back up & give it another week. Then do a hydrometer test if it's settling out clear.

 

[WoodlandBrew]

That looks good to me. However, the time period does seem long. If the OG was over about 1.060 that would explain it.

 

[BigB]

Thats fine. Different yeast strains can have different fermentation properties. I've had a few fermentations leave krausen hanging around... particularly Wyeast Kolsch strain. I'd leave it alone for another 10 days.

 

[unionrdr]

9 days isn't too long for the average brew/brewer. Even my 1.04X beers take 3 weeks to finish & settle out clear.