Reddit reviews Water Alarm- Leak Bug Flood Detector detects as Little as 1/32 Inch of Water- Electronic Overflow Alert Sensor Beeps When Battery is Low

A couple emergency and safety notes:

For everyone, do a massive favor for yourself and your property and buy one of these water / leak alarms, they’re cheap and also come in battery powered cute versions. If you spring a leak, this alarm will go off and you could potentially save your livestock, filters, pumps, heater, and of course your flooring and subfloor for just $15.

For those of us with injected CO2:

Any time you make a CO2 adjustment, be home and check in on your tank. It sounds excessive, but it’s pretty easy to just turn it up when you are watching TV on a weekend instead of off at work or school. Furthermore, if you are playing with your pH or kH, it is a good idea to do the same as this can effectively increase the amount of CO2 in the water.

Lastly, I am no expert, but I have found that increasing oxygen levels can be very beneficial. I’m still doing my research but it seems there is an overemphasis on keeping water agitation down. Plants and fish need oxygen. Putting a small airstone or having a HOB filter is not the end of the world – CO2 and O2 do not compete for space in water and now that I’m gaining more experience, seems to be beneficial as I’ve found it can keep the fish from getting gassed as the agitation will off gas excess CO2 and keep any scum from forming and suffocating the tank. If your solenoid or regulator fails or you get end of tank dump (all things which are fairly common), an airstone or surface agitation may be the only thing left to off gas that additional CO2 and save your fish.

A helpful video

They sell lil things like these (can probably find similar for cheaper) to just leave next to your water sources and they'll make noise if there's water on the floor!

Maybe something like this but put it on something the height of the level you want to detect?

Two thoughts on this:

1. GTD is worth implementing; it's hard to setup, but easy to run
   
2. Use plugins for GTD
   
   I love GTD because it helps me stay on top of 100% of everything. However, for people like you & me, who are what I call "naturally disorganized" (haha), we need some extra help, which is where the concept of plugins (note: that's not GTD "canon") comes in. Everyone has a core set of may be 20 or 30 things they have to deal with in their life...finances, food, house cleaning, car maintenance, personal hygiene, laundry, etc. Most people get by & can just push through the annoyances, but for those of us who struggle with organization, it's an extra challenge that requires a different management approach that what we do by default (simply because we're not getting the results we want by doing what we're currently doing).
   
   The example I always reference is laundry. Have you ever struggled with the following?
   
   

• Having laundry on the floor
  
• Having piles of laundry
  
• "Laundry days" where you spend all days doing laundry
  
• Running out of laundry supplies when you need them
  
• Forgetting to switch the laundry in the washer to the dryer (and then having stinky clothes & having to re-run them)
  
• Forgetting to take the laundry out of the dryer (and then getting wrinkled clothes)
  
• Having to wear the same clothes again because you don't have any clean laundry available
  
• Having a limited selection of clothing because you need to go shopping for more, but haven't
  
  GTD is great for capturing tasks, defining next-action steps that you can take, and managing reminders of those tasks so that they actually get done & not forgotten about. However, then you end up with a very reactive system instead of a proactive system when it comes to the recurring parts of your life, like doing the laundry or managing your finances, which for me, made me feel like I had a never-ending list of stuff to do. So let's flip the script & create a system plugin for laundry! If we think about what is required to manage laundry to the point where we've got it defined from A to Z & can stop thinking about it, there are a handful of things required for us to manage.
  
  System overview:
  
  

1. System setup
   
2. System maintenance
   
3. Laundry supplies
   
4. Laundry cleaning schedule
   
5. Wardrobe management
   
   1 - System setup:
   
   Logic:
   
   
6. We need a washer & dryer to clean the laundry, plus we need cleaning supplies
   
7. We need hangers & a chest of drawers to store clean laundry in
   
8. We need baskets to store dirty laundry in & move the laundry around
   
   Actions:
   
   
9. Purchase & install a rack (or select an existing location) to store cleaning supplies
   
10. Purchase & install washing machine
    
11. Print washing machine operational checklist & tape above washing machine (i.e. clean out clothing pockets, what settings to use on the machine, add in a gel packet, add fabric softener, and set your smartphone alarm for 60 minutes, or however long your machine takes to run, to remind you to swap the laundry)
    
12. Purchase & install standalone water leak detector (optional, integrate with a smarthome system for alerts; the water line to my washing machine leaked once & flooded my basement, it was awful!)
    
13. Purchase & install drying machine
    
14. Print drying machine operational checklist & tape above washing machine (i.e. clean out lint trap before use, add in a dryer sheet, set timer alarm on phone to remind you to take the clothes out, and check to see if trash needs to be taken out)
    
15. Purchase two extra lint traps for drying machine (the dryer won't last forever, but the lint traps break from time to time & then you have to hunt them down, so having a couple spares should last you for the life of the machine, or at least give you some buffer time to order more spares) & store with laundry supplies
    
16. Purchase & install hangers for your closet (for hanging clean clothes)
    
17. Purchase & install chest of drawers (for storing folded clean clothes)
    
18. Purchase & install the appropriate number of laundry hampers (I have one for white clothes, dark clothes, and towels/hand towels/rags/misc.)
    
19. Purchase & install a plastic laundry basket (for shuttling dirty laundry to the washing machine & taking clean laundry from the dryer to the folder & hanging area - I keep this in front of the dryer & then grab it to put the dirty laundry from my hamper into & then take that to the washing machine)
    
20. Purchase & install plastic bin under bed (or in closet in bedroom) for spare set of bedding (so you can change your bedding weekly, instantly make your bed again, and rotate through a second set)
    
21. Select a place to fold & hang your laundry (your bed, or a table in the laundry room, or on the couch while watching TV, whatever)
    
22. Purchase & install trash can (for lint, for things found in pockets before putting clothes in washing machine, for empty laundry cleaning containers, etc.)
    
    2 - System maintenance:
    
    Logic:
    
    
23. We need to clean & maintain the machines on a regular basis
    
    Actions:
    
    
24. Calendar entry: Clean washing machine monthly (inside & outside, using Chlorox wipes)
    
25. Calendar entry: Clean drying machine monthly (outside wipe-down, using Chrolox wipes)
    
26. Calendar entry: Clean dryer vent twice a year
    
27. Calendar entry; Recurring reminder every 6 months to refill
    
28. Calendar entry: Recurring reminder once a year to re-order a box of trash bags
    
29. Calendar entry: Re-order batteries for water leak detector
    
30. Calendar entry: Replace water leak detector battery every 6 months (as preventative maintenance)
    
    part 1/2

hmm.

driveways in front? sloping towards the building or away?

trying to figure out where all your extra water may be coming from.

6' isn't the worst if you end up figuring out you need to do some excavation to seal the outside of the basement wall. hopefully it won't come to that. it could be that a storm drain got all clogged and you had a freakish amount of extra water that couldn't drain.

you can get a water bug to alert you if it happens again.

https://www.amazon.com/Detector-detects-Electronic-Overflow-Battery/dp/B00OUD0QZC/

haaaa, here's one that looks like a bug