SLV is presenting a buying opportunity

Technically while I am long SLV in the big picture I think there may a little but of downside left to complete a healthy retracement. The tool I've used here depends on identifying divergence (in this case MFI but RSI is fine as well), you then measure the duration of that divergence, and lastly project it (duration) off the price low (as this is bearish divergence) within the period the divergence was identified. The notion is that this is the average time it will take for that low to be tested. What this means is that we *may* see a low in SLV on 8/14 and the general price range I'm looking for is 21.4 - 20.84 (prior low and pivot point) with a .618 retracement of the massive rally falling in that range. If the .618 retracement doesn't hold I will then look at the .5 mark visible on the graph. Please ask if you have any questions.