Faux background

[Stephanies.]

I’m what I would say is a newby to the hobby as I’ve only had a few tanks(5) for a couple years now.  But I am an avid diyer and I love to see what I can achieve with minimal expense.  
so my question is — I am building a 55 gal planted eco system that will house shrimp, cpd, neons, ottos and rummies for my 82 yr old house mate.  The background I have been working on is a combination of expanding foam, sand, rocks, silicon and krylon fusion spray paint.  What can I use to seal the whole thing so it’s safe and won’t leech into the water.  Any input is greatly appreciated as I have researched it on YouTube as if there is just too many options to trust my gut on.  

[nabokovfan87]

Zenzo has a series on this.  I will try to find all the parts and attach them below.
 

 

Welcome to the forums as well!

Here is another great resource of trusted information.
 

 

[Stephanies.]

Thank you so very much for the help and for welcoming me.   I look forward to learning all I can and making friends that have the same desire.

 

[H20 Plecos]

Have Stephanies. Good luck with your project. 

Thanks for the additional information Nabokovfan87! 

[BlueLineAquaticsSC]

I did mine with drylok tinted with acrylic paint, had it up for over a year without issue.