A while since I have updated on the journal……
Just come back today from a 2 week holiday ….. auto feeder and a rudimentary auto doser for ferts set up before I went as the scape has not bee left alone for more than a couple of days up to now.
Half expected to come home to an algae swamp full of dead fish so pleasantly surprised to find no algae, live fish but a staggering amount of growth to the point where the scape has become almost a solid block of overgrown greenery with no visible hardscape!
Some of the stems have grown at least 8 inches or so since I left them and the whole surface is now covered with emerging stems!
On further investigation I think my massive increase in plant mass is due in part to my home made fert-doser setup. I had set something up using a small powerhead on a timer set to run for 5 minutes a day. This was planned to add a diluted fert mix to the tank that would also make up for the loss of water from the tank due to evaporation. Everything seems to have worked fine apart from the minor issue that the wonderful British summer weather has been so cold and wet for the past 2 weeks that the tank suffered very little in the way of evaporation! As a consequence of this my doser increased the water level in the tank to the point where it was over the glass covers (fortunately still a couple of mm below the top of the tank so no wet carpets to come home to!).
I guess I have been a bit lucky here (my fish certainly have been lucky!) as this has meant the only oxygenation of the tank water has been via the plants themselves as next to no water surface has been available for gas exchange! Also, I guess my CO2 has not been able to gas-off at the surface so the tank has been running at higher effective CO2 levels for a while ….hence the super growth rates achieved in my absence.
Other negative is a huge increase in the number of planaria worms in the tank…..I think this is likely down to over-feeding via the feeder I had set up. I have some worming medicine and will likely dose the tank tomorrow after I have hacked out a few buckets of plant growth.