can I add

[Neon]

..another fish ? Please see my signature , more details of tank size (135 ltr ) are in my blog . should I keep bio-load as it is or there is still a margin to add one more, and if so which one? I would love to hear your suggestions , please just keep in mind what I got and compatibility issue.....THANK U

[Afk4Jfk]

Your swordtail mail or female? If female i would add 1 male and 1 more female, if male 2 females Just my opinion.

[Northernguy]

You should add more sword tails to give your solo one more of a school.

[bluebluecow]

I agrre and would up the sowrdtail

Liz

[Neon]

my swordtail is just a kid now but it will grow ( I have been told ) up to 5 inch...and by the way is a boy ...so should I add girls ? are they shoaling fish ?

your absolute beginner:11:

[iZinedane]

IMO add 2 females for the male. and i don't think they're schoolers. just active around the tank.

[Afk4Jfk]

They Like the company and also they breed

[Red]

Your tank is close to the brim with stocking, two more female swords is good, but wtahc your parameters and don't forget about waterchanges.

[Afk4Jfk]

When getting close to over stocking the tank I heard that adding the aeration gives a bit more leeway

[wolf_eyes]

I would also try to add more to the otos. They are a schooling fish so I would add at least 2 more

[Neon]

....yes I was thinking also to add one or 2 more Otos as they won't add more bioload significantly....not decided yet...waiting for more suggestions/advise..:22:

Aereation : got it , but I use it only during the night when both plants and fish are demanding for more oxygen..

Parameters : I use strips but I have learned that they are not so accurate as liquid tester, I will buy it.

[Lab_Rat]

I would add more otos instead of the swordtails. Swordtails do get large and I think two more, when full grown, would put the bioload too high. A lone swordtail is not a problem as they aren't schooling fish. The otos prefer to be in groups, I would not recommend less than 3. Plus otos won't increase the bioload too much, just make sure there is enough food for them.

[Afk4Jfk]

just my opinion but aerating all the time couldnt hurt just help. plus it looks cool.

[mac]

I would either get rid of the Sword, and get at least 3-4 more Ottos.

Really take care of the fish you have before adding more. What I mean the Sword will give a lot more of a bio load. And will be better removed.

While the Ottos do a good job in your tank, and do much better in a school.

mac