I live in the tropics which is of course hot and humid 24 x 7. I acquired several new french oak 5l barrels and decided to give whiskey a go for the first time. I've since filled 2 barrels, the first on Feb 1 and the second Feb 15. I soaked the barrels in RO water for a day on the advice that this process would help saturate the wood as well as provide a swelling to stop potential leaks. The new barrels are nicely waxed with polymer screw seals and do not leak.
After 1 month the first barrel is sloshing quite a bit and I'd estimate maybe 5-10% has been already drunk by the angels and the second barrel, less so but appears to be behaving in much the same way.
I am aware that in humid environments alcohol should evaporate faster than in dry and water will evaporate faster in dry climates, but I have both warm and humid conditions.
Much of what I read suggests just leave it alone till bottling time but I fear that the angels may drink the entire contents within a year if this rate continues. Now I don't know if this is a new barrel thing and it will stabilise or its just a what happens with such a small barrel and the climate, but I'd like some advice on whether I should;
1) leave it alone till I figure oak is sufficient by taste, then dilute to drinking and bottle;
2) top off with the run's hearts diluted to cask strength or
3) top off with RO water
Would appreciate any guidance.