Feeble Dry Starter

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I purchased dried starter and have failed miserably at reviving it. I keep adding equal weights of flour and water, but I failed miserably to get it beyond the point in the photo. I even tried an all-rye version with scarcely better outcome. I see there is some activity, but I'm missing the idea of how to get it building. I've been working at this for over two weeks. Please help troubleshoot. Thanks so much.

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Do you discard some of the starter when you feed it.

A good start is keeping 10 gram of the starter and add 20 gram flour and 20 gram water 1:2:2. 

A picture from the top is nice, to see the churning appearance.  But, can you share a picture of your starter from the side?  Do you have a marker-line, tape-line, or rubber band showing the level where your starter started? 

I did try the rubber band, but the height stays pretty much the same. I feel like it is mostly white flour by now. I'll give it another try.

Thanks