6 weeks flowering: should i flush now??

hello everyone, today marks 6 weeks of 12/12 and my buds are filling out nicely. should i flush now and finish out with plain water? or should i give one last application of ferts and then flush in a few more days when they dry out from that? i'm not sure what strain they are (bagseed special), but i'm guessing they are indica dominant...thanks!

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would wait until the last week to flush would just look at the trichromes closely and when you think they are within about a week away from harvest would start flushing.
while there is a few strains that may finish in 50 days of flower most will go a little longer.