Truth is a plankton with 100 Steem power is hardly going to Make that much SP, the truth is that steem is currently about 0.25 cent currently and an account with 500 sp can only cast a vote of 1 cent at a 100% at a vote weight of 100% and if you do the maths a you'll have to divide a vote of 1 cent into (5) to actually determine what 100sp will cast in vote, barely Little if you ask me.

However the fact is that no matter there will always be curation reward, though it may be it decimals for example 0.01 in curation reward at times but the thing is, it can even get worse if you're not voting after the 15 minute window.

So if you ask me, the low steem prices currently is the reason why a 100sp account will never make much, but the thing is that you can actually salvage more if you vote on.

CONTENTS WITH HIGH POTENTIAL EARNINGS. For example, zaku is an example of a content creators that uses bid bots to upvote his posts so at the end of the day, his contents usually have over 170$ in potential reward so let's say you vote on Zaku's content just within the 15 minute curation window, you can earn a little higher curation reward than a post that earns 5$ in potential rewards. You can actually use Steem Auto to set your vote to 15 minutes window at 100 %, this way, you'd Definitely earn more on curation reward. Rather than usual and this way your Steem power will rise more than usual.

And also always vote on the 15 minute window in order not to burn your curation reward after you vote on a Post.