Just an update on my bot
I've written it in php and now I placed it on 3 "pairs" and 3 different types of modes: conservative, medium, aggressive
Info:
profitable orders - orders which were open on one level and close at 3 levels away in profit
LTC/USD - "conservative mode" for 10 days no trade - it could be because there is not much volatility and the grid size is too big for this pair, but we stick to rules and let it run
GridSize = $0.9NMC/USD - "medium mode" for the last 3 days - 4 profitable orders, that is good so far for this pair,
GridSize = $0.1PPC/USD - "aggressive mode" for the last 24h - 2 profitable orders,
GridSize = $0.03, with this grid-size on profit I usually get 1.5% - 0.4%(fee) = 1.1% pure profit (3*$0.03/$6), and for now I think this is the lowest acceptable level, we need also to keep in mind that in case of a big down move here we could consume all of our funds to buy ppc
Conclusions: In future will be much easier to use only 2 variables for this bot:
ProfitPercent - Profit generated from 1 profitable trade for only 1 Size of Order, starting from 0.5% for aggressive mode (note: keep in mind that to this value needs to be added every-time 0.4% transaction fee), this will also help to have less orders if price jumps quickly up, if price jumps quickly down we could use another value for ProfitPercent, but this is another story
Amount Per Level - basically the order size in $