Try decanting off almost all your basic water, then pipette up as much more as possible using a bit of cotton and a glass eye dropper. Once you have as much basic water as possible decanted off, add distilled water to make it pourable and filter.
If your filters are breaking due to the basic water, this should help as the water should be at a much lower ph. You could even do a few base washes like that before filtering using distilled water, and just do one final rinse to get the last little bit of lye rinsed out once its been filtered.
Really though, i'd go for cotton packed in the bottom of a glass/metal funnel if you don't have a buchner. You can find one at most grocery stores, and its leaps and bounds better than using coffee filters, which imho are pretty flimsy and weak for filtering harmala fb out of basic water.
"let those who have talked to the elves, find each other and band together" -TMK
In a society in which nearly everybody is dominated by somebody else's mind or by a disembodied mind, it becomes increasingly difficult to learn the truth about the activities of governments and corporations, about the quality or value of products, or about the health of one's own place and economy.
In such a society, also, our private economies will depend less upon the private ownership of real, usable property, and more upon property that is institutional and abstract, beyond individual control, such as money, insurance policies, certificates of deposit, stocks, etc. And as our private economies become more abstract, the mutual, free helps and pleasures of family and community life will be supplanted by a kind of displaced citizenship and by commerce with impersonal and self-interested suppliers...
The great enemy of freedom is the alignment of political power with wealth. This alignment destroys the commonwealth - that is, the natural wealth of localities and the local economies of household, neighborhood, and community - and so destroys democracy, of which the commonwealth is the foundation and practical means.” - Wendell Berry