They should prorate any rents and transfer any security deposits on account. 

If your lease with the tenants stated they are responsible for this bill, I'd suggest you pay it right away to avoid the lean and include it as part of the security deposit settlement process. 

What is the maximum deposit amount per pet?

I assume you got the security deposit from the seller so you can sue that to pay the missing rent and any damage that has occurred. $700 for a water heater sounds like a steal. $200/mowing seems high, luckily that will go away next month at the latest?

I feel like I do not owe them the deposit as per the lease, but wanted to see if pursuing this in court is worth the time.

If you want simple numbers, 80-20, capital by LP vs. capital from GP, GP will usually invest first 10% before raising any funds (legal, deposits, maybe plans, etc.)The return will be pari passu on contributed funds first, thereafter say a 50-50 return.

I also play the penny slots when I go to Vegas and only take $20 with me if that explains anything. 😊 Lol…

They didn't follow instructions when they signed up to set up auto deductions, so they had a renter's deposit of $280.

I say that because I have no control over the stock market, but I do self manage my single family homes.The absolute safest investment is certificate of deposits or savings accounts that are FDIC insured, but they pay sub 1% return.

I want to deposit the tenants' security deposit in an interest esrming account.