How long should drain tubes stay in after breast explant surgery/capsule removal? How long does it usually take to fluff back?

  I am sorry to hear about the problems you are experiencing. You will find that the use of drains will vary from one practice to another. In my practice, I do generally use drains when breast implants are removed.   I removed the drains when their outputs are low.  On average, drains are removed four to seven days after the surgery. Patience is definitely indicated after removal of breast implants; it will take many months/year for the skin to “bounce back” and for you to see the final appearance of the breasts.
In "borderline" cases where there is doubt whether breast lifting is necessary or not, I advise patients to undergo explantation only and to give their breasts the benefit of the doubt  before deciding whether breast lifting would be beneficial.  
 I hope this, and the attached link (dedicated to breast implant removal surgery concerns) helps. Best wishes.

I keep my drains in my patients until the fluid becomes straw coloured and drains less than 30mL per day.  This is usually between 3 and 7 days after the surgery. The drainage appears to be more in patients with larger implants, hard capsules and leaking implants. Removing old breast implants and their associated capsules generates a large raw surface area under your breast that produces a lot of blood and serous ooze. The drains help to siphon this inflammatory fluid away so that your implants can quickly stick and settle into their new position.

Thank you for sharing your excellent question.  In most instances drainage tubes can be removed with 3-10 days of surgery.  It will largely depend on the amount of fluid that drains in 24 hour increments.  Your breast tissues will heal and soften over the following several months to leave you with your long-term appearance.  Hope this helps.