Watch it when replacing tants with electrolytics. Not all capacitors and use cases are equal. If it’s supply decoupling, electrolytic is fine. If it’s anything else, forget it; the tant is in there for a reason.
To replace supply decoupling caps I tend to just buy tants now. They’re not that expensive from local suppliers for me. If you have to use an electrolytic, use a low ESR one and solder a 100nF ceramic across it as well. Electrolytics are only reasonable up to a few hundred KHz.
If you’re feeling cheap, the surface mount tants are cheaper and can usually be soldered across the old TH tant’s pads.
I bought a whole reel of 10uF 25v tants for £10. That’s about 400 on there. And AVX ones no less.