YSI has some stuff that does a great job of automated monitering.
Also, Sens-a-phone products will do the same, then call you with alerts if something goes out of the preset range. Expect to pay for products like that, though.
I've used both of these. I love YSI meters and what not, but the Sens-A-Phone works great for watching your stuff when you can't.
YSI:
http://www.aquaticeco.com/index.cfm/fuseaction/product.detail/iid/1037
Sens A Phone:
http://www.aquaticeco.com/index.cfm/fuseaction/product.detail/iid/1109/cid/4070
Also, Sens-a-phone products will do the same, then call you with alerts if something goes out of the preset range. Expect to pay for products like that, though.
I've used both of these. I love YSI meters and what not, but the Sens-A-Phone works great for watching your stuff when you can't.
YSI:
http://www.aquaticeco.com/index.cfm/fuseaction/product.detail/iid/1037
Sens A Phone:
http://www.aquaticeco.com/index.cfm/fuseaction/product.detail/iid/1109/cid/4070