Looking at the product, I don't quite comprehend why it would seem difficult to add a second reservoir, unless you aren't talking about a second hydration pack itself.

I think I trek around in similar conditions (India) as you do, and I typically face this issue, and for that I did the simplest thing I can. Carry 3 bottles (1L each). When hydration bladder get empty, I refill it with water in the bottles. I plan to upgrade from hard bottles to collapsible water packs which I can place where I find enough volume for it to accommodate.

Looking at the product, I don't quite comprehend why it would seem difficult to add a second reservoir, unless you aren't talking about a second hydration pack itself.

I think I trek around in similar conditions (India) as you do, and I typically face this issue, and for that I do the simplest thing I can think of. Carry 3 bottles (1L each). When hydration bladder get empty, I refill it with water in the bottles. I plan to upgrade from hard bottles to collapsible water packs which I can place where I find enough volume for it to accommodate.

Looking at the product, I don't quite comprehend why would adding a second reservoir be difficult, unless you aren't talking about a second hyadration pack itself.

I think I trek around in similar conditions (India) as you do, and I typically face this issue, and for that I did the simplest thing I can. Carry 3 bottles (1L each). When hydration bladder get empty, I refill it with water in the bottles. I plan to upgrade from hard bottles to collapsible water packs which I can place where I find enough volume for it to accommodate.

Looking at the product, I don't quite comprehend why it would seem difficult to add a second reservoir, unless you aren't talking about a second hydration pack itself.

I think I trek around in similar conditions (India) as you do, and I typically face this issue, and for that I did the simplest thing I can. Carry 3 bottles (1L each). When hydration bladder get empty, I refill it with water in the bottles. I plan to upgrade from hard bottles to collapsible water packs which I can place where I find enough volume for it to accommodate.