Not to be a dick, but I think prevention is the key here. Theres probably not going to be something thats powerful enough to remove all your deposits but not reactive with metals. Bacteria are probably the best bet (assuming it really is alge and not something reacting with the hyperlube), but I'm not optimistic.
If you're seriously concerned about this, I would change the tubes (or clean them outside of the system) and then use a biocide powerful enough to deal with microbs before they damage your stuff.
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