• You are viewing the forum as a Guest, please login (you can use your Facebook, Twitter, Google or Microsoft account to login) or register using this link: Log in or Sign Up
  • You can now follow UKAPS on Instagram.

Water change vs top-off question for a 5G planted tank

CheckeredRust

Member
Joined
4 Jun 2021
Messages
56
Location
Asia
To give a bit of info, I have a 5G medium planted tank, with 2 Nerites and about 8 neos and 40+ baby/juvenile neos in the tank. I live in a tropical climate, so I run a cooler fan for my tank, which also means evaporation is fast. What I've been doing so far for this tank's water change routine would be:

20% water change > water evaporates > top off with dechlorinated water > water evaporates > top off > water change

Because the evaporation is so fast, I have top off about 10% twice a week (excl. of water change itself). Is true that because I top off with dechlorinated water, the TDS and mineral will build up significantly right?

In order to prevent the build up of minerals and TDS, and to counter the evaporation, is it safer for me to do 2x 20% water change weekly? Instead of topping off, I do a small water change to avoid the build up of the minerals.

P.S. Could the minerals build up or TDS be the reason why my neos aren't breeding? The babies were from a berried one that I bought that gave birth in this tank. The babies are growing up fine, I feed them shrimp cuisine, recently dosing bacterAE, but just don't have luck with any berries, it's been about 3 months :(
 

MichaelJ

Member
Joined
9 Feb 2021
Messages
875
Location
Minnesota, USA
To give a bit of info, I have a 5G medium planted tank, with 2 Nerites and about 8 neos and 40+ baby/juvenile neos in the tank. I live in a tropical climate, so I run a cooler fan for my tank, which also means evaporation is fast. What I've been doing so far for this tank's water change routine would be:

20% water change > water evaporates > top off with dechlorinated water > water evaporates > top off > water change

Because the evaporation is so fast, I have top off about 10% twice a week (excl. of water change itself). Is true that because I top off with dechlorinated water, the TDS and mineral will build up significantly right?

In order to prevent the build up of minerals and TDS, and to counter the evaporation, is it safer for me to do 2x 20% water change weekly? Instead of topping off, I do a small water change to avoid the build up of the minerals.
Hi @CheckeredRust, the topping off won't get rid of the waste and TDS build up from the minerals in your tap water as all that is left in the tank when water evaporates. When you do the 2 x 20% water changes you could mix in some distilled water to counter the mineral buildup or get a small RO unit to make the water yourself and remineralize based on your needs. In any event, you should consider getting a TDS meter to monitor the situation.

P.S. Could the minerals build up or TDS be the reason why my neos aren't breeding?
That is not unlikely. Neocaridina can be sensitive to "TDS stress", but they are fairly adaptable. I keep my TDS at around 275 ppm with a GH at around 7, temperature at 24C and my shrimps are breeding just fine.

Cheers,
Michael
 
Last edited:

Similar threads

Top