> For the complete documentation index, see [llms.txt](https://help.waterwatch.io/3.0.1/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.waterwatch.io/3.0.1/hole-saw-options.md).

# Hole Saw Options

For plastic tanks, any holes saw sized 50-65mm will work fine.

{% embed url="<https://www.bunnings.co.nz/craftright-5-piece-hole-saw-set_p6370199?gclid=Cj0KCQjwhqaVBhCxARIsAHK1tiN5rYa1tqPx9PRm_7AyhtABoTFsMhB72-50f51rqmukJgNgnniZm5kaAnmeEALw_wcB&gclsrc=aw.ds&store=9476>" %}
Hole Saw - Plastic Tank
{% endembed %}

For concrete tanks, a diamond core drill bit will be the best option. We use this one available online:&#x20;

{% embed url="<https://www.holer.co.nz/#/Product/info/DCD0052-02>" %}
Hole Saw - Concrete Tank
{% endembed %}

A cheaper option is this one from Bunnings, but if the tank wall is thicker than 25mm you'll need a cold chisel to chip the center out half way through:&#x20;

{% embed url="<https://www.bunnings.co.nz/sutton-tools-64mm-diamond-grit-holesaw_p6350461>" %}
Hole Saw - Concrete Tank
{% endembed %}

{% embed url="<https://www.mitre10.co.nz/shop/number-8-cold-chisel-set-3-piece-grey/p/235627?gclid=Cj0KCQjwhqaVBhCxARIsAHK1tiNAb9MbCrUkiyQr3EMztUI9qM2JYwgCGOuHwGOQInKUBVNZLTOi3t4aAnZ8EALw_wcB&gclsrc=aw.ds>" %}
Cold Chisel Set
{% endembed %}

Installing the Waterwatch T35 on a concrete tank:&#x20;

{% embed url="<https://www.youtube.com/watch?v=x6SPMyhQ61M>" %}