Typical that just as I wrote about the difficulty decreasing and might be a negative it picked itself up again and then became a positive, although a very small one. 0.04%

As always you can keep track of what the next difficulty change could be by going to https://bitcoinwisdom.com/bitcoin/difficulty

Here is the Payout info for Mining Day 19.07.2016 All payouts listed are for 50GH/s except GM X11 1MH/s payout and are after the maintenance fees have been removed

Hashnest Payouts

Payouts based on 26 blocks found.

Hashnest S7 50 GH/s  @ $0.0006 USD per GH/s   0.00001128 BTC   

Genesis Mining

Genesis Mining 50 GH/s @ 0.0012 USD per GH/s    0......   No payout.

Genesis Mining 50 GH/s @ 0.00099 USD per GH/s   0....  No payout.

Genesis Mining 50 GH/s @ 0.00089 USD per GH/s   0...... No payout.

Genesis Mining 50 GH/s @ 0.00079 USD per GH/s   0.00001293  This payout is based on two days payouts, the previous days payout of 668 satoshi was stored and then added to the payout today. The payout today would have been 625 satoshis as when you add them together you get 1293 satoshis.  Genesis Mining only pay out when the amount of satoshi is 1000 satoshi or more. Once again imagine if you were a provider that only allows you to manually withdraw and at a set limit. It would take ages for your payouts to reach that level and even when they did, you would then end up with nothing as the fee had just taken it.

Genesis Mining 50 GH/s @ 0.00055 USD per GH/s   0.00001879 BTC   

Genesis Mining 1 MH/s X11 BTC (AUTO)                0.00002641 BTC    Remember this is based on most profitable X11 coin being mined and paid to BTC

So out of SHA 256, the best paying contract for that mining day was the Genesis Mining with the eqv maintenance fee of 40 US cents per TH/s.
The Hashnest S7 contract is based on a maintenance fee eqv to 60 US Cents per TH/s

But on somedays if Antpool has a good day finding blocks then the payout can be better than GM and on somedays it is less.