For god sake do not raise the ph of the compost to 7 you WILL get problems
have a look here
https://www.autoflower.org/f73/ph-potential-hydrogen-manual-polled-12594.html
the first table right hand side shows the range of ph that nutrients are best taken up by plants
it is harder for compost to buffer up than it is to buffer down
to put it simply if the compost has a ph of 5.8/6.0 and your feed is ph 7 then as the compost buffers the feed down all the different parts of the feed become available to the plants