DWCHCanswered grow question 5 years ago I wouldn't give any grow nutes as they usually contain potassium nitrate, this can cause pollen sacs when too much is given in flower, but! There is a tolerance for micro amounts late in the game.. a boost of calmag calcium nitrate based, with a bit of potassium nitrate and sulfate of potash can help bulk them up during the final two weeks... Watch those pH levels! Cheers! DWCHC 👈 👍