Adding stock question

[Bethily777]

I have a 38 gallon, 2.5 year old established tank.  Stock is currently 1 Angelfish (docile nature), 3 glofish tetras and 2 albina cory cats.

 

I'm intending to add 10 cardinal tetras, 6 Julii corys, and 6 Amano shrimp.

 

I over filter the tank (its high flow) by using a aqua clear 75 as well as a spongefilter.  Would it be okay to add all of the new stock at once as I believe the cycle will adjust fairly quickly?

[KBOzzie59]

I would be comfortable adding that all at once.

[Dwayne Brown]

I would start out with adding just the cardinal tetras or the julii cories. I would then about 5 days later add the tetras if you added the Corys 5 days before or vice versa. I would then put the amano shrimp in 5 days after that. this way it gives the aquarium time to adjust to the rapidly increasing population. I would definitely add the shrimp last as they are the least hardiest of the 3. 

[Bethily777]

The biggest issue with staggering the add is that the shipping is flat rate $12.99 so I really want to get them all at once, rather than pay that fee 3 times.  especially if it does not go well with the amano shrimp with an angelfish!

[Solidus1833]

Use Seachem Stability the day you add the stock. It will buffer your beneficial bacteria to accept the added load. That said, I don't think you would have much of a problem with what you plan to add. Everything on your list to add doesn't really add a whole lot of bio-load compared to what's already in the aquarium. If planted its even better as the plants eat the ammonia. 

[Dwayne Brown]

If it is your only option than go for it, Having a planted aquarium well help get the extra ammonia down.  Something else I would do is get ammonia filter.

[lefty o]

just slightly up your feeding a day or two before  the new critters arrive. this will give the bacteria a chance to adjust to the new load before it happens.