Mashing out and Oxygenating wort

[Braindead]

Good afternoon.
Two questions
1. I have access to my mums oxygen tank but have no caring stone, would it be fine just sticking the hose in and giving the wort a good boost of pure oxygen?
2. I use my HLT for the sparge water and for the boil. So I have to wait will the HLT is empty after the fly spare before I transfer from bucket to the HLT to boil.
So with my setup I cant washout before fly sparring, or is there any other method of getting the grain to 170 before I fly.

Thx

 

[Bigcol49]

Hi!
At what temperature is your sparge water?

 

[Braindead]

Sparging at 168. But I though for washout it had to be held at 170 for 10 mins, with fly spearing I find the temp drops to about 160
I got one of these from my local aquarium, think that should do the trick

 

[Bigcol49]

Hi!
If you are not heating the mash directly you would usually increase mash temperature by adding very hot water. This article suggests 200°. Continue to add water until mash temp reaches 170°.

 

[Braindead]

On all my previous brews ive never mashed out just gone straight to fly. But doing a big expensive brew at weekend

 

[AlanHarper]

My suggestion is if you gave a spare PB lying about - it may even be the one you will eventually use for the brew you are making - heat your sparge water first to about 10 C more than you will use for sparging. Put the sparge water in the PB and keep the lid on. It should stay hot enough to wait for you to heat mashing water, mash out, sparge from the PB and while doing that you could washout the HLT. Or am I missing something here? This is what I do anyway.