I was given two seedlings around mid june this summer. The genetics have been narrowed down to ether a pk female and a heavy duty tuttie fruity male or sensi star female and heavy duty tutty fruit male. Small error in a mates grow lol. I have been using general organics throughout flowering and noticed pre flowers around 15 of aug. I will note im very close to main. My issue is im unsure when to start to flush or leach the soilless mix im using. I knew that they would never finish under the cold damp conditions we have here this time of year so I have moved them inside under a 1000w hid. I know you can look at the triches to help determine when they are ready but I don't want to start flushing long before they are done. Any advice?