You can increase your BTC holding, you just have to know how to set up the bot and what to expect from normal market activity.

If you had 20k at 130 USD, then you at 900 USD you should have made (in fiat) about 70k to 90k. When it comes back down to roughly about the same level, your bot will then buy BTC and increase your future earnings as it swings up again. Of course this may take months and a very volatile market. The next time (assuming the same level of volatility) you should have alot more BTC than you started with.

Though honestly, if you are looking for short term gains you'd have to look at a BOT that can look at different kinds of indicators and more than 4 thresholds. Hopefully B-Bot development goes down the same path as Haasonline.