Ph Help with unattended plants

I just started a seedling in a home made dwc mother pot. I am making a mother to supply me with clones.

I will have to leave her alone around Christmas time for a few days, maybe up to 5 days. I know the water's ph will slowly climb back to about 7 in a few days left unattended.

I need help from an experienced bubble head for tips and issues with leaving my plant on auto pilot for a few days.

Help me keep this ICE mother alive!

If you have a drain at the bottom of your bucket/pot make another bucket with a drain at the bottom and attach a second bucket of nutes with some tubing. This will increase your volume and keep your nutrient concentration up and thus your PH down. I quess I could have just said add a reservoir.
Good luck.

Thank you very much. I will work on increasing my volume of water.

i mix high concentrates of acid in my 2nd bucket so the plant doesnt turn out like my aunt suzzy